"can't"

they can, but they won't

instead everyone will use Rosalina and the ice climbers will be forever forgotten because they can be so easily beaten its sad if you abuse the pink one's horrible AI

and then the character becomes useless because all the moves are weaker or don't work without both with the exception of basic stuff

I also hope they fix sonic, because in brawl he was garbage besides that final smash
though he does look promising, aspecially him spin dashing to chase luigi, then going in air and kicking him out

sweet moves, sonic

anyways, eggman was the true final boss of sonic lost world

eggman or maybe zavok confirmed for ssb4