Locke 06
Sayonara, bye bye~
Legitimate question: What do you think is the best move in the game? You can use how it combo's well with that character's moveset (Robin's UAir off of Arc Thunder/Elfire) in your argument, as well as how it shapes how people have to play against you (Ness backthrow or Villager Pocket).
but in all seriousness... Falcon Punch is the answer we all want to say.