Irvin is a cautious and very aggressive demon who will defend himself if someone tries to hurt him. He hates angels, as demons and angels are enemies. He is snappy and tries to hide his fear normally, and doesn't trust easily. He has a low pain tolerance and his wings are sensitive. He is a bubbly and kind person when you get to know him. He has red horns that can glow when he's scared, a red devil tail that he can control and big black wings, and his hair is brown and his eyes are hazel brown.