Aaahh!!! Real Monsters
Aaahh!!! Real Monsters is an American animated television series developed by Klasky Csupo for Nickelodeon. The show focuses on three young monsters—Ickis, Oblina and Krumm—who attend a school for monsters under a city dump and learn to frighten humans. Many of the episodes revolve around them making it to the surface in order to perform "scares" as class assignments.
The series premiered October 29, 1994, at 11 am on Nickelodeon. Running a total of 52 episodes over 4 seasons, the final episode aired December 6, 1997.
The show takes us through the struggles of life as a child monster. Three monster friends are studying how to scare humans in school. Often, their attempts don't work out as planned.