Malamar sprite

So... Malamar.

Dark/Psychic.  Note that in the Japanese version, Dark is outright called the Evil type.
Has the Contrary ability, reversing all status changes--even those that should be physically impossible.
It has Foul Play, making a physical attack that somehow uses the other Pokemon's attack power instead of its own--but certainly not in any way similar to aikido.
It has Topsy-Turvy, which it can use to somehow reverse all of its *opponent's* status changes--again, which would require twisting reality and the body quite a bit, and messing around in the other Pokemon's head.
It has Swagger, increasing a Pokemon's attack while making it confused. If used on allies, isn't this rather like empowering mad cultists?
It has Psybeam, yet another confusion (insanity) provoking attack.
It learns Trick Room, where it twists reality on its head so that fast is slow and slow is fast.
It can control the very weather around it.
Despite being a bizarre squidlike THING, it can force Attract on other Pokemon and make them love it.
It is a tentacled cephalopod with seemingly malevolent intentions that can control the minds of others.
It can use Round to say things that actually damage those that hear it, giving unutterable phrases that the ears where never meant to hear.
It has the single most unusual method of evolution that no sane person would ever discover on their own, which one could rightly state is quite eldritch.
It can learn Sleep Talk via TM (Ph'nglui mglw'nafh Malamar R'lyeh wgah'nagl fhtagn!)

Malamar = Cthulhu.