Punch-Out but all your opponents are from Smash Bros

How would each character function as an opponent? DK is the same as he is in Punch-Out Wii though.

Some ideas I came up with are Inkling covering the screen with ink, making it harder to see their attacks; Captain Falcon incorporating his Falcon Punch and Falcon Kick as hard hitting attacks and Wario cheating constantly, like Aran Ryan levels of cheating x10