Heatwave is Annie's pet wyvern and Sunfyre's brother. He haw red and black skin, black horns and ridges on his face and back, and yellow eyes.
He is somewhat of a bully and aggressive. He is shown to be protective of his friends, as demonstrated when defending Annie against her mother. He didn't like Feather's group when they first met but warmed up to them over time.
Heatwave can breathe fire in a wave-like form, hence his name.
Trivia:
Heatwave is named after his fire form.
His design is based off of Caraxes from House of Dragon.
