Fathom was an adult male SeaWing prince who was introduced in Darkstalker. He was an animus dragon, although he rarely used his power. He was in a relationship with Indigo and his last known location was an island near the Rainforest Kingdom.
Fathom had sea-green scales that glow emerald-green in sunlight, as well as gray-green eyes the color of miniature oceans after a storm. He looked very similar to his descendant, Prince Turtle.
Fathom was a mostly carefree dragonet, although expectations from Lagoon often distressed him. Although he developed anxiety after the Royal SeaWing Massacre, he had always been nervous and a bit awkward even before the incident. Prior to the massacre, Fathom was humorous and did not seem to take his royal title very seriously, despite several warnings from Queen Lagoon.
After the massacre, however, which resulted in the death of his parents and several other family members, he was traumatized by the event, making him depressed and lonely. He often felt guilty and ashamed of the fact that he was an animus dragon, especially since he was discriminated against and hated after the event. Fathom's sister, Queen Pearl, put a law in place by which animus magic use was banned, and she did not seem to care much for Fathom's well-being. Most stayed away from him, and were quite passive aggressive. After Fathom was sent to the Night Kingdom to convince the young animus Darkstalker that using animus magic was dangerous, he regained a sense of purpose. He cared for his friends Clearsight and Darkstalker and loved Indigo deeply. He is compassionate, fair, thoughtful, and kind. But even after the event with Darkstallker and the Royal SeaWing Massacre, they still haunted him at his last appearance.
|Fathom was the grandson of the animus dragon Albatross and the second known animus of the SeaWings. After Albatross went insane and caused the Royal SeaWing Massacre, Fathom swore an oath to his sister Pearl, the new queen of the SeaWings, to never use his animus powers again. One year later, he was sent to mentor Darkstalker and warn him of his soul, and the two became friends quickly. On Clearsight's fifth hatching day, Darkstalker made three enchanted star-shaped sapphires called dreamvisitors and gave one to Clearsight and Fathom to link the three, no matter how far apart they were. As time passed and Darkstalker became more ambitious with his powers and enchantments, Fathom came to believe that Darkstalker would become evil, lose his mind, and kill everyone. He eventually broke his oath and enchanted Clearsight's bracelet to put Darkstalker into an eternal slumber, as Fathom and Clearsight were convinced that Darkstalker would turn evil and become a threat to everyone. The NightWings then abandoned their city and moved to the NightWing island.|
The Jade Mountain Prophecy
|In Moon Rising, Moonwatcher read a scroll trying to find out about Dreamvisitors and found out about Fathom from the scroll and more about Darkstalker. The scroll mentioned Fathom's ties to the Royal SeaWing Massacre, and his enchanted object to put Darkstalker to sleep, but not much else was mentioned. Darkstalker confirmed that the enchanted object was a bracelet that was supposed to put him to sleep forever, though as Darkstalker said, almost everything deteriorates with age.|
|More information flying in soon …|
|Talons of Power|
|Darkstalker mentioned his hate for Fathom while in the lost city of night and said he would never forgive him. He gave Anemone Fathom's room in the old palace and told her it was designed with SeaWings in mind. Darkstalker said that because of Fathom, he didn't accept gifts from animus dragons, "especially lying, conniving SeaWings." Later, when he saw Turtle for the first time, he roared "Fathom!", mistaking him for his ancestor, and shot fire at him.|
|Darkness of Dragons|
|Qibli mentioned Fathom and Clearsight when he asked himself if he and Clearsight would have had some kind of backup plan if their friend/enemy was freed and that he would if he were them.|
The Lost Continent Prophecy
|The Lost Continent|
|In the prologue, Clearsight thought briefly about how she saved Fathom and the NightWings, and could now settle down for a more peaceful life in Pantala.|
|Fathom and a group of SeaWing dragonets; including his sister, Pearl, and a dragonet named Indigo, were waiting on a beach on orders of Lagoon. Indigo teased Fathom consistently, but he ignored her and followed Lagoon's orders to stay still. Finally, she arrived alongside Albatross. The two announced that they were going to be testing to see if any of the dragonets were animi. Albatross gave them some coconuts and told them to enchant the coconuts to hit him. At first, Fathom tried politely telling the coconut to hit Albatross. When nothing happened, Indigo teased him again. He then sternly commanded it to do so, enchanting the coconut to hit Albatross in the chest. Albatross congratulated him while silently strangling a distant seagull with a vine.
Later, Fathom, Indigo and some other SeaWing dragonets were in a geography class when a messenger arrived and told him that Albatross was waiting for him due to their first animus session. Fathom met his grandfather at the "sunset beach," and Albatross lead him to the then-unfinished Summer Palace. He told him the story of what happened with his sister, Sapphire, when they were young, and cautioned him about the dangers of being an animus. Once they found out Indigo was spying on them the whole time, Albatross changed his mind and they headed back to the palace. Fathom then enchanted a wooden octopus to come to life for Indigo, and she named the octopus Blob.
During a diplomatic meeting with the SkyWings, Queen Lagoon revealed that she had animus dragons. As the party continued, Albatross snapped and went on a murderous rampage, killing nearly the entire royal family before Fathom stopped Albatross with an enchanted spear. Fathom then saved Indigo's life by enchanting her pearl necklace. After Pearl ascended to the throne, he swore an oath to never use his magic again or have dragonets, cutting the palm of his talon with a sword to prove his point. Queen Pearl accepted his oath and told Fathom that there was a NightWing animus, Darkstalker, and wanted Fathom to go to Darkstalker to teach him how animus power can be harmful. Indigo burst into the conversation, warning Pearl that it might not be safe for Fathom. She then asked permission to accompany Fathom to the Night Kingdom. Pearl then allowed Indigo, Lionfish, and Wharf to go with Fathom to the Night Kingdom, however with Fathom feeling slightly guilty as they took off. Later, Vigilance introduced Darkstalker to Fathom, along with Indigo and the other guards.
Fathom asked if Darkstalker knew why he's here, and Darkstalker replied that it's because they're both animus dragons. Indigo, hostile, snapped back that it's to make sure he doesn't turn into Albatross. Darkstalker replied that he's delightful and that if Fathom was so worried, he should make something like a soul reader. Fathom shook his head, his mind thinking terrifying thoughts. Darkstalker tried to soothe him by saying that he could make it himself, but Fathom replied that he came here to help Darkstalker stop using his magic. Darkstalker said that Fathom doesn't have to be this miserable and that he should enchant an earring that makes him stop thinking about it so much.
Indigo immediately wondered if he's working any magic on them. Fathom said he has to remember what happened so he wouldn't use any magic. Darkstalker replied that he could make Fathom happy, which made Indigo press a knife against Darkstalker's neck. She warned Fathom that Darkstalker was messing with his head and that she should kill him now. Fathom argued that Darkstalker hasn't done anything bad yet and that he wanted to get to know him. Indigo added that Darkstalker might be a mind reader, to which Darkstalker innocently agreed. Indigo, alarmed, replies that if Albatross could read their minds, they'd be dead by now. Fathom soothed Indigo, and Darkstalker decided not to kill her, for now. Indigo hesitantly stepped back, and Darkstalker continued showing them the Night Palace.
Fathom and Indigo were later shown lost in the hallways of the Night Palace while trying to find their suite. Eventually, they found a NightWing who led them there. Fathom noticed that Indigo changed when other dragons were around; she became taller, and her voice became more commanding. At their suite, they found Wharf and Lionfish sleeping. Indigo started to lecture them but Fathom interjected that it was a long flight and to let them rest. Indigo began to search the room for threats, and Fathom quietly said that he's the only threat here, because of his magic. Indigo replied that he's not a threat to her. Fathom argued that he's a threat, especially to her because no matter how many oaths he swore to, she's the only dragon who could make him use his powers again. She replied that she trusted him. After a moment, he said that he should go to bed, to which Indigo agreed and said she'd sleep by the door to keep him safe. Worries flooded Fathom's mind until he finally fell asleep.
Later, Clearsight saw Fathom in the palace and ran to him only to have Indigo stop her, and she quickly apologized. Darkstalker then showed all of them a soul reader he made. The soul reader was an hourglass with a telescope attached to it while containing black sand and white sand. To use it, he had to point a telescope at a dragon and the hourglass showed his or her distribution of white sand and black sand in the hourglass. If the white sand, representing the IceWings, outweighed the black sand, representing the NightWings, it meant the dragon was tipping towards evil. However, if the hourglass showed more black sand than white sand, it meant the dragon he was pointing to was good. Not knowing about Darkstalker's scroll enchantment, Fathom worried about Darkstalker's soul. Darkstalker then proclaimed that it was only a little enchantment and didn't cost that much of his soul.
Darkstalker asked Clearsight to point it at him. When the soul reader was still taking a long time calculating, Clearsight nervously joked that Darkstalker confused it. Darkstalker shrugged, saying that it took a while sometimes. Finally, the soul reader stopped, giving out a measure of black and white sand. The black sand outweighed the white sand, but the white sand was a bit more than Clearsight's reading. Clearsight assured herself that Darkstalker wasn't completely evil, and Darkstalker said the same, except with more confidence, and told Fathom there's nothing to worry about. Then, Clearsight pointed it at Fathom. However, Indigo jumped in front of Fathom, saying that it could be enchanted to do something to Fathom, and the soul reader landed on her, showing that Indigo had the same results as Clearsight's.
Fathom reassured her that he wanted to see it for himself, and Indigo reluctantly moved away. Soon, the soul reader landed on Fathom, showing that Fathom wasn't evil as well. They advised Clearsight to take a break, but she had so much on her plate. He said that Fathom's power was a gift, and he shouldn't be so terrified of it. Then Darkstalker shot a hostile look at Indigo, saying that it wasn't a trick, and his intentions were only to make Fathom happy. Indigo sharply replied that she believed Fathom could be happy without any magic.
Weeks passed by, strengthening Fathom's friendship with Darkstalker and Clearsight. He still didn't forget his mission, and constantly checked on Darkstalker. One evening, he found the soul reader on his desk with a note from Darkstalker that said Fathom's mind should stop worrying so much and he could use the soul reader whenever he wanted. Indigo said that it was very suspicious, saying that it was probably enchanted to show that Darkstalker was always good or whenever Fathom touched it, it made him trust Darkstalker even more. Darkstalker suddenly appeared, standing over the balcony, saying that Indigo was paranoid and clever and that they're lucky that Indigo isn't an animus with ideas like that. He then mentioned that he used it once on Arctic already, saying that Arctic was almost as bad as Darkstalker thought. Fathom tipped the soul reader to Darkstalker, and it showed the same results as last time. Darkstalker grinned, saying that he was not evil and should bother Clearsight.
When they arrived at Clearsight's door, she refused to come out and stated that she needed to finish a report on the next year of IceWing maneuvers. But Darkstalker pointed out that it was Clearsight's Hatching Day tomorrow. They flew out and went into a forest, where they built a fire and ate fruits that Darkstalker brought. Darkstalker was about to give them their presents when Fathom told him to wait. Because Fathom didn't have any gifts, he took a piece of wood from the forest and whittled a NightWing. Clearsight exclaimed that it looked just like Listener, and Darkstalker asked Fathom to make him a SeaWing later when he had the time. Darkstalker then gave Clearsight and Fathom each a Dreamvisitor, keeping one for himself. He explained that it would allow the carrier to walk the dreams of any dragon the carrier had seen or known and that it would connect the three friends so that however far apart they are, they would always be together.
Fathom was unsure and was about to give his Dreamvisitor back when Clearsight suddenly had a vision of Foeslayer in danger. Darkstalker asked Fathom to go back to the palace on his own and flew off with Clearsight. Fathom then realized he never had the chance to give back the Dreamvisitor.
Fathom was shown later in his room with Indigo and Wharf, wishing that he and Indigo were alone. He wanted to tell her all that was worrying him, but the only thing at the moment was Darkstalker, who was insisting that his mother would return home soon in a weird state of mourning. Clearsight had joined him for dinner (breakfast for her) and began to talk about her powers as a seer, saying how she can see so many possible futures but she can't change something once it's in the past. Darkstalker then comes in, asking Fathom if he wants to watch a lightning storm from the Royal Tower, to which Indigo objects, saying it was the exact wrong place to be in a lightning storm. Fathom then remembers to give Darkstalker a SeaWing statue he had made for him, but as he gives it to Darkstalker, he notices an odd expression on his face. In return, Darkstalker tries to give him a goblet made of "shimmering sea-green glass" and he notes that he gave Clearsight a pair of moonstone earrings as well.
Fathom carries the goblet over to the fountain to fill it with water, only for Indigo to knock into him and shatter the goblet into pieces. When Darkstalker berates her for it, she accuses him of putting a spell on the cup to do something to Fathom. Darkstalker insists it was not animus-touched and calls her "Violet," which Fathom corrects. Indigo still insists Darkstalker did something to the goblet, something horrible and manipulative, but Fathom insists that Darkstalker wouldn't do that. Fathom says Indigo was being a good bodyguard, but Fathom is shown to be upset at her.
Fathom then goes with Darkstalker to the Royal Tower to watch the lightning storm, but instead of taking Indigo with him, Fathom takes Wharf with him, to which Indigo is clearly startled and hurt at.
After watching the lightning storm, Fathom returns to find out that Indigo is gone, and Darkstalker shows him a letter on a desk in Indigo's handwriting, saying that she's going home because she doesn't feel safe here and asks to Fathom not to use his magic to find her. Fathom is shocked, noting it didn't feel like something she'd do at all.
Fathom asks if Darkstalker minds if he keeps the model SeaWing he made for Darkstalker (which looked like Indigo), to which Darkstalker shows brief hesitation, but Darkstalker then pulls him into a hug, causing Fathom to decide he must have imagined it. Fathom decided it must have probably been for the best, as Indigo was now safe from animus magic forever.
Fathom appeared later in a game pavilion with Darkstalker and Whiteout when they were in the middle of a scales-and-squares game. Suddenly, a dragon lunged out of the shadows and stabbed a spear right into Darkstalker's heart. However, because of Darkstalker's invulnerability spell, he survived the attack. Lionfish, one of Fathom's guards, lunged at the attacker and quickly killed him.
Listener, Clearsight's friend, started freaking out, claiming the spear hit him right in the heart. Darkstalker, not wanting to reveal his invulnerability spell as he knew Clearsight wouldn't approve and Fathom would freak out, said that he guessed that the assassin missed. Listener said that he didn't miss and asked Clearsight what she saw and Clearsight replied that she didn't know. Listener roared with frustration and then left. Darkstalker said it wasn't a big deal and then said he would like to know who the assassin was. Clearsight added that she wanted to know why he tried to kill Darkstalker. Darkstalker said pointedly to Lionfish, "Too bad he's dead and can't answer any of my questions," and Lionfish said sorry without any actual repentance. Thoughtful then indicated that he knew him by reputation and said his name was Quickdeath, also indicating that he was a killer for hire. Clearsight then asked if somebody sent Quickdeath to kill Darkstalker, and Darkstalker said that he failed. Clearsight said that maybe the dragon would try again and that she felt like there were bad branching paths for the future, all blurry. Darkstalker confidently said that they would find out who hired Quickdeath and stop them from trying again to kill him again. His eyes, described by Fathom as onyx beads, reminded Fathom of his grandfather. Lionfish said that they should go back to the castle and Clearsight, Darkstalker, Fathom, and Lionfish went back to Fathom's room. Fathom worried about Darkstalker's soul the whole way there.
In the room, Darkstalker tells Lionfish that he can leave and that Darkstalker will protect Fathom. Lionfish leaves, and Clearsight then more privately accuses Darkstalker of his miraculous survival saying Listener was right about it hitting him in the heart. Darkstalker admits to his invulnerability spell. Fathom checks the soul reader, and Darkstalker says that he made the invulnerability before he made the soul reader, so it was going to read the same thing. This was true, however, there appeared to be more white sand than there was before. Fathom is still scared for Darkstalker, and Clearsight tells Darkstalker to tell Fathom about the scroll.
Darkstalker is surprised and asks if that is safe, to which Clearsight responds that Darkstalker shows it to him in all the good futures. Darkstalker says that he also shows it to him in the bad futures, too. Clearsight tells him that Fathom isn't the one who turns them bad. Darkstalker scowls at her and sarcastically says that her faith in him is heartwarming. Fathom notices Blob underneath his blankets and quickly hides him from Darkstalker and Clearsight. Fathom starts getting worried about Indigo because he knows that she cares about Blob and wouldn't leave him.
Later, after Darkstalker and Clearsight found out Vigilance was the one who tried to have Darkstalker assassinated, Fathom asks Clearsight what's going on, and Clearsight tells him the queen tried to kill Darkstalker, and in turn, Darkstalker is coming to kill her. For a moment, Fathom is hesitant to believe this and says that Darkstalker might forgive her since he forgave Indigo. Clearsight suddenly realizes that Darkstalker might not have forgiven Indigo and that he did something to her, but before she can tell Fathom this, they spot Darkstalker. Clearsight signals for them to land on a nearby roof to talk.
As they touch down, Clearsight says to Darkstalker that she isn't going to let him kill the queen. Darkstalker smirks at her and tells her that Vigilance started it, and she and Fathom plead with Darkstalker to help turn things back the way they were so that the queen can trust them again. Darkstalker refuses and tells Clearsight that they'll always be in danger from Vigilance unless he kills her or enchants Clearsight's scales to be invulnerable as well. Clearsight snaps that she would never let him do that, and says that she can't believe he betrayed her by putting a spell on her and messing with her power. Darkstalker dismisses this easily, saying that it was just a tiny little spell that just made them happier and life much easier, and adds that he was double-checking her work. He spreads his wings to go kill the queen, but Clearsight tackles him, pinning him to the roof. A vision suddenly sweeps over both of them of Arctic taking Whiteout to the Ice Kingdom, and Darkstalker and Clearsight fly off to save her, with a confused Fathom right behind them.
As they fly out of the Night Kingdom and towards the Kingdom of Sand, Fathom notices dead IceWing bodies that lay sprawled near the Nightwing border. He asks Clearsight about it, and she states that Darkstalker had put a border shield that kills any IceWings that try to enter the kingdom. Horrified, Fathom continues in silence. After flying in the Kingdom of Sand for a while, Clearsight says that they could be anywhere. Darkstalker takes out his scroll and Clearsight questions what he's going to do with it. He responds saying that it wasn't what she thought and enchants a dagger to stab Arctic's foot, not killing him but forcing him to stop. A few moments passed with the dagger not moving, and Darkstalker remembers that he has an enchanted earring that protects him. He enchanted a beetle to take the earring off, then the dagger flies off. Darkstalker follows it, with Fathom and Clearsight close behind.
They find Arctic with Whiteout peering at his injured foot. Arctic tells Darkstalker to let them go, as he had spared him. Darkstalker asks where Arctic was bringing Whiteout, and Arctic says that Whiteout wants to go with her. Whiteout agrees, and Fathom could see there was something wrong with her voice. Whiteout even jerks away from Clearsight, staying near Arctic. Arctic says that Whiteout would marry an IceWing prince, not a lowborn Nightwing. Whiteout agrees. Darkstalker states that Whiteout would be even more miserable at the IceWing palace than Arctic was in the Night Kingdom. Arctic then replies that he is doing this for Foeslayer, saying that Queen Diamond would let her go if she had Arctic. Darkstalker objects calmly that he is doing it for himself- that he has no reason to stay in the Night Kingdom now that Foeslayer was gone, that he is taking his chance to go home.
Darkstalker also says that Arctic will most likely reveal the NightWing secrets, and also might use his powers again to attack the NightWings. Fathom could see from Clearsight's expression that it was true. Arctic says that he would only do so for Whiteout, and to leave before Queen Diamond's army finds them. Whiteout states that she wants to go with Arctic and that she doesn't even like Darkstalker. Darkstalker realizes Whiteout had been enchanted and grabs his scroll. He tells Arctic that he made the mistake of not killing Darkstalker before he left. Arctic snarls saying that no matter what Darkstalker thought of his soul, he wouldn't kill his own son. He stood up, then asked what Darkstalker was writing. Clearsight pleaded Darkstalker to stop. Fathom wondered if he could stop Darkstalker, but it was too late, as he had already finished writing.
Darkstalker tells Arctic to stop talking, and when he opened his mouth, nothing came out. He then tells him to never use his magic and to never hurt him or his friends ever again. Arctic lashed his tail in silent rage. Fathom asked Darkstalker what he had done, and spotted Clearsight with her face buried in her talons. Darkstalker ignored Fathom and continued, telling Arctic to release the spell he had put on Whiteout. He grabbed the golden glass shell necklace she was wearing, smashing it. Whiteout gasped, as though she had just woken up. She cried that it was too late- that the sand was falling. Darkstalker tries to reassure her, but she just says that she is thankful for being unfrozen, but is sorry for winning. Darkstalker says that she shouldn't be and that he can give him and his friends the best future. Darkstalker sees Fathom and Clearsight's panicked and concerned faces and tells them to calm down since he saved the day. Clearsight responds that she wanted to see the scroll, and Darkstalker hands it to her. Fathom felt like he should know what it said, but he read it anyway. It said: Enchant Arctic the IceWing to obey my every command. Fathom and Clearsight were shocked. The chapter ends with Fathom wondering if it would ever stop.
Fathom is shown later in his room pacing anxiously. Clearsight gives him Darkstalker's scroll to find a way to stop Darkstalker, but Fathom refuses to use it, as he suspects it may be enchanted to tell him when someone uses it, and so he says he will use his own power. Clearsight objects at first, saying that it would break his oath, though she knows that the thread of hope in the timelines was wavering, so she agrees. Fathom uses her moonstone bracelet to put an enchantment on, one that only works on Darkstalker. Clearsight thanks Fathom as he gives the bracelet back, and tells him that she is worried Darkstalker had enchanted Indigo somehow. She then tells him that afterward, he is to hide the scroll, but no matter what he was not to destroy it. She leaves, saying goodbye to Fathom.
Fathom was thinking about what Clearsight had said. That Darkstalker had done something to Indigo. Fathom refuses the fact that Indigo is dead. He starts to read the scroll, finding small enchantments for his mother, and one enchantment that made a bell ring when Fathom was ever sad or lonely. Fathom felt guilt deep within him, though he knew Darkstalker had done some horrible things too. Fathom read the entire scroll, but nothing had something to do with a dragon disappearing. He noticed that Darkstalker had started to put spaces in his scroll, and Fathom wondered why Darkstalker hadn't used every inch. He realizes that he was using his night vision to read, and brings a candle over.
Dark shapes flutter over the scroll, and Fathom is shocked to find out Darkstalker had used invisible ink. He saw his immortality spell, the spell on Clearsight's earrings, and, to Fathom's horror, an enchantment on the goblet that Indigo had smashed, an enchantment to make him stop loving Indigo and decide to use his magic freely. He feels guilty for being mad at her, as she had saved him. He found an enchantment on a dagger to go kill a single IceWing every full moon, leaving a carving of a message near the body that tells them that Darkstalker is coming and will kill them all. The enchantment was made to last a year, or until Darkstalker called it back. Enchantments to torment the classmates he didn't like in creative ways, nightmares that are sent to Queen Diamond about ways he would kill her. Then, Fathom spotted something so startling he nearly burned the paper in the candle.
It was an enchantment, an enchantment that said: Enchant this pebble so that when it rolls into the same room as Indigo the SeaWing, she shall be instantly trapped in the small wooden carving of a dragon made for me by Fathom., and right below that was: Enchant this piece of paper to look like a note written in Indigo's handwriting, with a short, believable message saying she's leaving Fathom and not coming back. Fathom hurried to the carving he had made, picking it up. He called to Indigo, apologizing. He decides to use his magic again and commands the carving to return Indigo to him. Then the carving went warm, and when Fathom put it on the ground, it grew and shifted into Indigo. Indigo stretched, asking if she had fallen asleep. She then notices Fathom is crying and asks him about it. Fathom whispers that Indigo didn't leave him, and she says that she never would and never will. Fathom confesses that he loves her and that he never wanted to be without her again. She agrees, twining their tails together.
Fathom explains that something bad was happening, and tells her that he had used his magic. He gives the soul reader to Indigo, but she throws it into the fountain. She demands to know what he did, claiming that she knew Fathom's soul better than any enchanted hourglass did. He says he made an enchantment to stop Darkstalker and an enchantment to bring Indigo back. He claims that he's evil- that his soul is gone- and tells Indigo to stay away from him. Indigo roars that using his magic doesn't make him evil- if he did evil things he would be evil. They start to argue, and Indigo says that he managed to stop two evil animus dragons. Fathom says that it was maybe two evil animus dragons as Clearsight was still going to stop Darkstalker. Indigo asks why he hadn't said that first, and finds Blob. They all flew away, side by side.
Five years later, in the epilogue, Clearpool, the daughter of Indigo and Fathom, is screaming, stamping her feet furiously when she fails to catch a fish. Indigo calmly replies for her to be patient. Clearpool says she was, yelling she "waited and waited and then pounced and it got away." Indigo then says she missed one of her waits, and Clearpool splashes away, leaping over crabs and kicking sand in a hole her brothers were digging. Cowrie tells her to "get her big galumphing talons out of here." In reply, Clearpool slams her feet into the sand, causing the whole side of Cowrie's hole to collapse. Indigo comments that they may have named the wrong dragonet after Clearsight. As Clearpool flings herself into shallow water and rolls around in a fit of temper, Indigo buries her face in Fathom's neck, hiding her giggles.
Fathom suggests that maybe she'll grow into her quiet wisdom like Indigo, to which Indigo replies that she has always been quiet and wise. Fathom replies that he recalls a few shrieking fits when she was that age, such as when Fathom ate the last salmon for breakfast, which caused Indigo to dump him in a koi pond. Ripple than pops out of his hole, realizes that someone else was getting more attention than he was, and promptly scrambled over to flop on top of his brother and sister. Clearpool complains, and Indigo tells everyone to quit mashing each other, and then she'll tell them a story. The three dragonets instantly jumped away from each other and came scampering above, plunking themselves into an attentive semicircle around their parent's talons.
Clearpool demands for them to tell stories about the Kingdom of the Sea, and Fathom says that he may take them there when they're all grown up, while Indigo thinks, "When there's a new queen who doesn't know about Fathom's promise to Pearl." They were on an island off the southern coast of Pyrrhia, within sight of the rainforest, and kept up with tribe news by visiting and trading with RainWings every couple months or so. That's how they knew that the NightWings had vanished, and nobody knew where they'd gone. There was also no sign of Darkstalker, so she knew Clearsight must have succeeded.Warf and Lionfish had returned home after they lost Fathom when still believing Indigo had left him. Ripple says he wants to hear about Fathom and Indigo when they were little, and Fathom replies that they were never ever naughty. However, Cowrie wants to hear stories about bad guys, about how they get that way, and why they do bad stuff. Fathom replies that there are lots of ways, and lots of reasons, sometimes because they're sad or angry, or sometimes because they have too much power. But Indigo says some don't, referring to Fathom and thought how he had too much goodness in him to turn out like Albatross and Darkstalker there are no such things as bad guys, saying there are dragons who do bad things, but that doesn't make them all bad. He says they can also do good things, and some of those bad things are mistakes. Indigo firmly replies that some dragons are definitely bad and have to be stopped, but Fathom says he doesn't think any dragon is all bad. Indigo tells her dragonets that she knew a bad guy once, referring to Darkstalker. However, Fathom said he did bad things, but also some good things, and cared a lot about his friends. But catching the look on Indigo's face, he adds that he did mostly bad things, but he's gone now. Indigo agrees and says he's never coming back, which would later prove to be wrong. Indigo tells Fathom he did the right thing, saying he saved Pyrrhia from him forever and it's safe to be happy. Fathom says, "I know," unfurling his wings, shaking off the memories, and smiles at Indigo, saying, "I am."
When Fathom first saw her, he fell in love with her. He wanted to spend more time with her than anyone else. They often teased each other and they spent a lot of time near each other. After the Royal Massacre, he made a vow to not go near Indigo for the risk of hatching more animus dragons but it felt as though his wings have been cut off. He missed Indigo dearly. A year later, she requested to go as a bodyguard with him along with Wharf and Lionfish to the Old Night Kingdom. He had been surprised and happy at the same time. She immediately distrusted Darkstalker the moment she met him, smashing the goblet that he had enchanted to put a spell on Fathom. During his stay at the night kingdom, he tried to stay away from her but he didn't want to, which made him act oddly in front of her. It ends with Fathom marrying Indigo and hatching three dragonets, Clearpool, Ripple, and Cowrie.
Fathom saw Albatross as his teacher, his mentor, and his friend as his grandfather trained him in the ways of animus magic. Fathom desperately wanted to win his approval, trying to seem ‘enthusiastic and full of ideas'. After Albatross murdered the Queen, Fathom didn't want to kill him, trying to convince himself that it was a mistake and Albatross didn't mean to kill Lagoon. Ultimately, what caused him to kill his grandfather was when he badly hurt Indigo but after the massacre, Fathom still mourned him deeply.
Fathom cared about her very much after their first meeting. He trusts her better than he trusted Darkstalker, working with her to take him down. He, Darkstallker, and Clearsight formed a friendship bond.
Darkstalker was one of Fathom's best friends. Darkstalker enchanted a bell to ring whenever Fathom was feeling down or lonely. But he had other plans as well. Darkstalker enchanted a glass goblet to when Fathom first drinks from it, he will stop loving Indigo and freely use his animus magic again. When Fathom read Darkstalker's scroll, he decided to use his magic to take him down.
Fathom seemed to love his sister very much, worrying over her when she was bleeding and it seemed that Pearl loved Fathom too, even though she was always sighing about how immature Fathom and Indigo were. It did hurt Fathom when Pearl said he couldn't see Indigo anymore but even through that he still loved Pearl.
Fathom seemed to respect the Queen but he also disliked her due to her being mean to Indigo, calling her ‘low born purple dragonet'. Fathom also stated that the only time he got really angry was when Lagoon ordered Indigo to go deep-sea shrimp fishing because they had run out.
Fathom was very close to his parents, mourning them when they died. Fathom also mentioned that if an assassin was sent after him, his father will go check if he was ok.
- "I mean … there are dragons that do bad things. But maybe that doesn't make them all bad. Maybe they can also do good things. Maybe some of those bad things are just mistakes."
- ― describing "bad guys" to Ripple (Darkstalker, epilogue)
- "Spears! Kill my grandfather!"
- ― enchanting spears to kill Albatross (Darkstalker, page 94)
- "Do you think it's true that animus dragons lose their souls? Is that why he's doing this?"
- ― to Indigo during the Royal SeaWing Massacre (Darkstalker, page 91)
- "Clearsight just flew off with the bracelet and he's meeting her and hopefully she can use it on him, but it's possible she won't be able to, and then he'll be really mad, and then he might come back and … you know, destroy the world after all."
- ― to Indigo, updating her on recent events after freeing her from the carving (Darkstalker, page 350)
- "I seem to recall just a few shrieking fits when you were that age."
- ― to Indigo, about when they were young (Darkstalker, epilogue)
- "Sometimes … sometimes they don't know they're bad guys. They think what they're doing is the right thing."
- ― to his dragonets about "bad guys" (Darkstalker, epilogue)
- "Um, like, never eat the purple variety of long-legged sea crab?"
- ― to Darkstalker, when told to "Say something wise and insightful now and then" (Darkstalker, page 224)
- "Queen Pearl of the SeaWings, I pledge you this oath, on my life and sealed with my blood: I will never use my animus magic again, not for the rest of my days."
- ― to Queen Pearl, taking an oath to never use his animus magic again (Darkstalker, page 128)
- "Not with magic, I know that's what you're thinking. Please, Darkstalker, we can find another way. You don't need to spend your magic on this."
- ― to Darkstalker after Quickdeath's attempt of assassination (Darkstalker, page 291)
- One of Fathom's descendants, Prince Turtle, is said by Darkstalker to look exactly like him.
- In Talons of Power, Darkstalker says to a not present Clearsight that he still has not forgiven Fathom for "betraying" him.
- In some of Clearsight's visions, he was the godfather of her and Darkstalker's dragonets. However, Darkstalker being put to sleep prevented this from occurring.
- He is the enchanter of Blob, the first known animus-created pet.
Present: Abalone • Flounder • Herring • Kelp • Lagoon • Nautilus • Pearl • Piranha • Riptide • Snail • Snapper • Squid • Tempest • Tortoise • Urchin • Webs • Whirlpool