Kaibutsu-kun (1980)
Japanese title: 怪物くん (1980)
Type: TV
Episodes: 94
Premiered: fall 1980
Source: Unknown
Genres: Comedy, Horror
Studios: Shin-Ei Animation
Duration: 25 min per ep
Rating: G - All Ages

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)