Best: Lucario (he is teh epic pwnr!), Kirby (don't under estimate him or you'll be under him!), Pikachu (Pi? Pikapikapikapi pikachu!), Zero Suit Samus (Did you say something? I couldn't hear over the sound of you exploding.), R.O.B., Fox (FFFFFIRE!), Link, Luigi (What is so bad about him?), Zelda, Sheik, King Dedede (Up - BOOM!!!), Lucas, Toon Link, Squirtle, Charizard (Use rock smash!), and Sonic.
Worst: Ness, Ivysaur, Jigglypuff, Falco, Wolf, Bowser, Snake (he is teh epic FAIL!), Meta Knight, Mario
, Wario, and Ganondorf.
Others are neither.