Calumon

Calumon is one of the main heroes in Digimon Tamers. He is also the source of Digivolution.

Personality
Calumon is extremely cute, and loves to play with humans, especially Takato and Guilmon. He dislikes not having anybody to play with, as well as getting tortured by Impmon. When Calumon is happy, his ears sprout up, but when he's sad, his ears shrink.