Youkai Ningen Bem
Genres: Horror
Type: TV, Episodes: 26
Aired: Oct 7, 1968 to Mar 31, 1969
Studio: Dai-Ichi Douga
Source: Original
Rating: PG-13 - Teens 13 or older
Synopsis:
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)