Deinon is Horek's son and Hilda, Deinon, and Cory's brother. He has light and dark gray, dark red, and blue skin with a red and blue feathery crest and tail.

Deinon is shown to gruff, tough, and loves hard core stunts. He is often made fun of because one of his claws are longer than the rest, but he doesn't mind this.

Deinon was born to Horek and his wife alongside his brother Croco, and sisters Hilda and Cory. As a child, Deinon was the most ill-tempered of his nest. He disliked being talked to and hated making friends. However, he's more than willing to join with Feather and his group just so he could find Hilda.

Trivia:

Deinon's name comes from Deinonychus.

His index claws are longer than the rest of his claws.