1. Mewtwo: Its scientific backstory and personality(in the first movie) stand out to me in the pokemon universe. I have a thing for genetic themes tough. 2. Reshiram: Nice fantasy backstory in BW and the combination of white, orange/red and blue(eyes) look great. 3. Xerneas: Nothing known about its story yet, but I like its color sheme and the fact that it's got nothing dragon/monster-like in its design despite being a cover legend. It looks very calming to me.