Name: Jailkeeper
Descrption: A pokemon designed specifically to lock down options of attack, retreat and defence on the enemies team.
Explanation: I'm thinking, basically, something that can block OPTIONS, with moves like Imprison, Mean Look, stat lowering moves, Taunt, Torment, Knock Off, ect. Basically, think of it like this: common SD Lucario switches in. CAP6 would be designed to stop its set up, then lock its common moves. Blissey switches in, CAP6 Knocks Offs Leftovers, ect. It would be balanced out by the all too common 4 moveslot syndrome, because obviously, if you are running it to Imprison, you can't have it Taunt and Trick, too.
Also, I like the functional gimmick idea (that was what I was going to originally post).