Coalwalk is a hellhound and one of Aasira's pets. He has black, red, and orange fur and glowing orange eyes.

Coalwalk was rescued by Aasira from a fighting arena alongside his siblings.

Coalwalk is the least shy of Aasira's hellhounds. When it comes to interacting with humans, he is always the more alert and wary compared to his easier going siblings. He is by far the most aggressive of the four, easily agitated and quick to anger, as seen when he is attending a sky knight council meeting, he is seen sitting next to his master but he aggressively gets up and snarls at a few Sky knights when they approached his master. He is also the first to react to orders and takes the initiative in confrontations, as seen when manticore Carver threatens Aasira, he was the first to jump to his master's defense and viciously bites his neck. Despite his aggressive nature, Coalwalk takes a paternal instinct towards Aasira and his siblings as seen sitting next to Aasira during her grief from Celste's death and resting his head on her arm.

Trivia:

Coalwalk is named after his glowing yellow legs.

Coalwalk's eyes don't have pupils, instead they glow a fiery orange yellow color.