Sirocco is hulking, large and burly. As a Talon of Power, he wears a black hood and golden medallion etched with the image of a vulture. He has three dragon skull tattoos trailing down his neck and a rough, gravelly voice. Either he or Rattlesnake look a lot like Qibli.
The Dragonet Prophecy
Qibli describes Rattlesnake and Sirocco as "a pair of dung-snorting hippo heads who'd rather stab [Qibli] with their tails than share so much as a fig with him" when Sunny asked Qibli if he had any siblings.
The Jade Mountain Prophecy
Moonwatcher sees Rattlesnake and Sirocco frequently in Qibli's thoughts when using her mind-reading abilities. She also had a vision about Qibli fighting Rattlesnake and Sirocco, with an older male dragon (presumably Vulture) glowering at him, with Qibli shouting, "Where is she?" referring to Cobra, his mother.
After Winter saves Qibli, Moon, and Kinkajou by breathing frostbreath at a flaming scavenger projectile, Qibli comments that his family probably would have stabbed him with the projectile themselves, rather than save him.
Two SandWings are shown buying dragonflame cacti from a SkyWing vendor. They were Sirocco and Rattlesnake collecting the cacti for Vulture.
In the prologue, a group of dragons, likely including Sirocco and Rattlesnake, terrified the SandWing tribe by setting off dragonflame cacti in different places throughout the Sand Kingdom.
Sirocco and Rattlesnake appear at their and Qibli's old home to take him and Winter to Vulture. He is shown constantly at Rattlesnake's side; Rattlesnake comments that he is a meathead who gives their family a bad name due to his clumsiness and lack of brains. He and Rattlesnake are defeated by their mother and nearly killed before Qibli convinces her to spare them. Sirocco was bound and gagged, then left behind in Vulture's compound with his unconscious sister while they escaped.
Alongside Rattlesnake, Sirocco threw Qibli into walls, trapped his tail in doors, or buried him in sand.
- "Mother don't want to see you."
- ― to Qibli (Darkness of Dragons, page 75)
- "Better come quick and easy, […] He don't like to wait."
- ― to Qibli and Winter (Darkness of Dragons, page 75)
- "Bit of a long story."
- ― to Qibli, about Cobra's whereabouts (Darkness of Dragons, page 76)
- "Skulls! Th'only good tattoo izza skull!"
- ― to Ostrich and Qibli (Darkness of Dragons, page 124)
- "I want a ruby inna middle of my forehead! Can you do that?"
- ― to Ostrich (Darkness of Dragons, page 125)
Present: Addax • Agave • Armadillo • Camel • Capybara • Cereus • Cobra • Dune • Horizon • Jerboa III • Kindle • Meerkat • Needle • Ocotillo • Ostrich • Palm • Parch • Prickle • Quicksand • Rattlesnake • Saguaro • Sandstorm • Sirocco • Six-Claws • Tawny • Torch • Viper • Vulture