Sunburn is a small juvenile phoenix.

He is mostly shy but very help and intelligent. He acts as Kira's scout and warns her of any danger.

Trivia:

Sunburn's name is a reference to him being a phoenix.

He is the third mythical animal that has the ability to speak, though he claims to have been a science experiment gone wrong.

Despite identifying himself as a phoenix, Sunburn appears to be a red and orange pheasant.