Don't own the game yet, but just got back from a friends house.
Have any of you all tried King Dee Dee Dee yet?
He is just plain awesome! Everything he does is a power move! I busted open a smash ball with one hit, and I had everybody running for cover in 3 player mayhem with friends. He is slow I know, but soooo strong!
King Dee Dee Dee and Olimar and Pikmin for me. O & P are challenging on account of the limited moveset, but so much fun to use.
BTW; Snake nor Sonic were playable; are they unlockable in the U.S. version, as I thought that they were part of the starting cast of selectable character. I was really looking forward to trying Snake.
Other I had not tried on account of not unlocked yet:
ROB
Wolf
Lucario
Sonic