Leave it.I tell you the answer. Its slowbro which has close relation to shellder. It is said in its Pokedex entries that if shellder is removed from its tail,It reverts back to Slowpoke.(Devolution)
First answer mine one. You are wrong. I said its highest stat of all non legendary POkemon and Regigas is legendary. I said it cant attack after an attack due to its ability and Regigagas has no such ability.
Okay for you I give another hint.It is introduced in Gen III and Used by Norman.