 His name seems to be a play on the Japanese pronunciation of the word "Crash" and the Japanese word for crow, "Karasu".In the anime, he may seem like a kind-hearted and gentle teenager who takes cares of the children in the orphanage, but since he has a split personality, he can change his personality into an evil person who is trying to steal B-Damans, along with an evil laughter, known as "Devil B-Der".His split personality is often called the "angel" side and the "devil" side.