Three monsters, Bem, who looks like a gangster, Bero, who looks like a boy, and Bera, a witch, act as agents of justice, hoping that they will be allowed to become human. Several episodes involve them protecting a young boy. The style of animation is fairly distinctive, and the storylines not without interest.

[Source: AniDB]

A golden warrior wearing a cape and a scepter, Ougon Bat was a protector spirit from Atlantis reanimated by a scientist and his friends (specially the sweet Marie) from his tomb covered in hieroglyphics. His entry was heralded by a golden bat and a sinister laugh and he would put good use of his super powers to combat the evil forces of Dr. Zero.

[Source: MyAnimeList]