He will probably have use, he's probably goin to be a Subspace Boss like Petey with a stamina bar and I disagree with control_alt_delete. I don't think they are going to have PC's as Bosses with a stamina bar. I think you'll fight other PC characters in regular matches in Subspace like how Mario and Kirby do in the beginning of Subspace. You see that wasn't a boss battle that was just a regular fight. I know the next thing people will say well what about DK and Diddy, they are probably goin to fight Bowser in a boss battle with a stamina bar. But I say NO they won't they may just fight him in a regular match or in a regular match 2v1 match while he's in the Giga Bowser transformation or something of that nature. But a true boss battle will be like Petey and possibly Rayquaza.