DD Tyranitar! It hits hard enough, it can be fast enough, etc.Expert Belt Ttar is a stupid idea because Ttar is already slow and has a lot of exploitable weaknesses. The drawback to Scarftar is that it doesn't hit as hard. The drawback to CB is that it's not fast enough. Take away both and you get a novelty shock value set that becomes almost immediately useless the second you use a move (which most likely won't kill anything because you are now too slow to kill sweepers and too weak to break walls). Ttar can run other useful sets/items besides scarf, but Expert Belt is definitely not one of them. Nor LO for that matter.
Anyway: Most people say Electivire is crap... but if it falls to UU it would be a quite potent poke there... maybe even broken.
And i see Yanmega was forgotten...