I was quite pleased when I ran across Monsters on Amazon. What a hoot! I remember catching a few of these back in '94 when the series premiered, but never caught many as life, the universe and everything caught up with me. Occasionally I would think back and wonder if maybe it would come out on disk sometime. How much fun when I found both Monsters and Tak and the Power of Juju both on Amazon Prime!
The monsters live in the tunnels under an unnamed city, going to Monster School, and learning how to frighten humans. The 'stars' of the show are Ickis, Krumm, and Oblina. Oblina, the female sidekick, is striped black and white, with a huge mouth, bulging stalk eyes, and the ability to reform herself into various and sundry horrible looking creatures, while Ickis can grow his big-eared, big-mouthed body to an impressive size. Krumm, (yes, Krumm is rather dumb) holds his eyeballs in his hands and attacks with a case of BO strong enough to knock over a warthog. Together, they go through the same (but different) trials and tribulations of any trio of class nerdy-misfits, working together to get through school and find their own identities as monsters.
This is a lower scale of violence from some other cartoons in the "old style." I haven't worked my way through all of them - I am taking my time and enjoying as there won't be more when I get through the ones on Amazon, but so far no worries for parents of the younger set. The monsters can be scary, of course, but in a gentler manner that shouldn't frighten the little ones. If you are an adult and like good animation, this is one to check out also.