Think about it!
The trailer for Kefka would have his infamous theme playing, and then all of a sudden Mario and the other regulars appear. Kefka knocks them away with some ice and fire attacks, and then it says...
NEWCOMER: KEFKA
Then, Kefka proceeds to jumping onto his stage, Kefka's Tower, as Mario and the regulars are in hot pursuit.
But of course, Kefka has something else up his sleeve. He turns around with an evil grin, and all of a sudden, Dancing Mad is playing in the background!
After kicking ass, he turns to the screen, and uses his taunt, his famous guffaw!
Kefka for Brawl!
Wait, what did I just say? I forget.