Zapdos, with it's great 125 Special and 100 Speed and good Electric/Flying stat. Zapdos's main flaw is that it's ugly as hell. I don't like the other four, though I love Moltres's design. Articuno is bland and becomes useless in later generations, while Mewtwo is: 1) overrated; 2) overpowered; 3) not very good-looking; 4) Uber. Mew is too hard to obtain and has a really bad Green sprite.