In the late 80’s or early 90’s there was a cartoon I liked. But I can’t remember the name. There weren’t very many episodes made of it, and its been a long time so I don’t remember much, but I’ll tell you what I know, and if you could tell me the name, I’d appreciate it.
This cartoon had monsters in it. There was one who had tentacles, and if any part of him was sliced off it grew into a new monster. The main monster was being held prisoner underground by two beings using magnetism. I guess one had south polarity and one had north polarity. He and the other monsters were freed by the main human bad guy.
I know for a cartoon I claimed to have liked, I’m not giving very good details, but back then I really didn’t pay attention to details. Anyway, I’m sure what I gave should ring somebody’s bell. I hope 
Just a WAG, but… This sounds like it could be the Inhumanoids. Any of this look familiar?
Yes, I beleive that’s it. Thanks. Wow, 1985, the mid 80’s…it was on longer ago than I thought.