Kaibutsu-kun (1980)
Genres: Comedy, Horror
Type: TV, Episodes: 94
Aired: Sep 2, 1980 to Sep 28, 1982
Studio: Shin-Ei Animation
Source: Unknown
Rating: G - All Ages
Synopsis:
Kaibutsu-kun and his companions, Dracula, Wolfman, and Franken, travel from Kaibutsu Land to the Human Realm, where they encounter and battle several monsters, mainly assassins from the demon group Demonish.

(Source: Wikipedia)