Bikara Taishou is one of the Twelve Divine Generals. Among the twelve zodiac animals, he represents the mouse. He keeps morale high with his cheerful personality and positive thinking. He's fully aware of his cuteness and flaunts it to everyone around him. He thinks this makes everyone else love him, but... -- quote from Namu Amida Butsu! Wiki.

Since the original design used some animal characteristics, it is advisable to add an animal head to the character. There is also some inspiration from this artist's model.