Pokemon Black & White Wifi Battle #177: PU Tier?

Yup, so here's battle with the never used pokemon of the Never Used tier. QotD: What do you think PU stands for? Opponent's channel:    / uberkabutops   List PU Pokemon: http://www.smogon.com/forums/showthre... Facebook:   / theflamingspade   Twitter:   / theflamingspade