Kaito Mizuryū is an X-class monster. He is a dragon. Specifically he is an ice dragon. His family name is Mizuryū. The Mizuryū house is a very old and powerful family of Dragons. Kaito is young as far as dragons go. He can be considered a prodigy. His skill in magic is astounding. He is an archmage and could be considered a master. He learns at a very fast pace and has a decent memory.