Tama

A former human knight. He was slain by a demon's blade, but for some reason, he was reincarnated as a baby Behemoth, an S-rank monster. While on the verge of death from his grave injuries in the dungeon, he was saved by Aria, who mistook him for a kitten. He then pledges to become her knight.

Even after reincarnation, his personality remains that of a proud knight. In battle, he utilizes a wealth of abilities to support Aria and the rest of his party.

(Source: Official Site)