Mr. Mime is a pokemon from the original 150, and honestly I've always hated Mr. Mime. Mimes are creepy enough, but when pokemon are suppose to be based on animals, it's kinda weird to have one that's a clown. His voice in the anime didn't help matters.
It's original Japanese name is バリヤード (Bariyado) which may be based on the English word "barrier" referring to mimes being stuck in the "barrier" of a imaginary glass box.