OK so this has been bothering me so much. I remember watching it on VHS I think. It had one main monster that had a rib cage where it stored a person and it could touch people and they became zombies or something. Also took place underground or something. There were more monsters and they all fought. Honestly I know its not much detail I just really want to know what's the name of the movie. There was 2 monsters one red and one blue and they fused together at some points.

In this movie did the one monster become friends with a kid that he brought to the monster place or whatever? I think they went under the bed or something and the other monsters didn't like the boy? If so I've been looking for that too, sorry I know this isn't much help to you but it might help me find the movie I'm talking about.

Hi Girvan I think the film you are referring to is Little Monsters with Fred Savage, I watched this as a child but don't remember if it has any of the points you remember from your film JSmylie