Baby Beel is very easily impressed, especially by strong people since he himself is still weak and loses to other babies as well as to cats. He often displays a fondness for things that might frighten "normal" babies, such as violence, exposed muscle tissue (on an anatomy model), heavy metal music, and demonic toys. He also despises clothes as he is usually seen naked and he tried to remove his clothes (especially his pants) when he accidentally got inside Oga's body (with Oga in his).