Slimes are the weakest?. let's change that. what if. Slimes were more terrifying. And Rimuru the was the original Slime. he wasn't a god or deity, just a slime. an Overly powerful and yet respected man. THE PRIMORDIAL OF ALL MONSTERS, A SLIME. Devourer Rimuru Tempest Slimes will be a bit OP here and not weak. But general slimes are weak.