I have to admit, this guy is almost perfect. I say almost if you were to use him in Ubers. As it is, he is the perfect Overused. The reason he can't be in Ubers is because he wouldn't likely survive one hit by the foe, having a different look won't matter much when you are still down in one hit.
EVs: Sp Attack, Speed, Defense Nature: Timid/Modest
Night Burst: This STAB move is good, lowering the foes accuracy a good amount of the time, while having 5 more base power than Dark Pulse and only 5 less accuracy, which will be better than your opponents accuracy pretty soon.
Nasty Plot/Extrasensory: I am always pushing this move onto movesets whenever possible. Extrasensory is for use with U-Turn. It deals with Fighting types
U-Turn/Extrasensory: While I would prefer Volt Change, this move is for when you really want to mess with the foe. Not advisable for use with Nasty Plot however. Extrasensory is more for use with Nasty Plot, dealing with FIghting types. I know, I did it weird. So sue me.
Flamethrower: Powerful move with or without Nasty Plot that deals with Bugs.