Vanglar

An ancient and powerful dragon (shifter)

He protects a library full of knowledge and powerful artifacts and magic.

His assistant, a human named Midori, is his only source of socialization, but he's often very annoyed by them.

He hopes to one day teach Midori his power so they can take his place.

He has a giant dragon form but usually only enters this form to protect Midori or if very angry.