meleebrawler
Smash Hero
I don't know the full scope of it's moveset, but it does have laser guns stored somewhere, the classic wrecking ball which fits Sakurai's tendency of implementing aspects of characters in novel ways, and the Sonic bumper symbol on a shield.I mean, maybe? I'm not too familiar with the comics. Though with that design, it also brings to mind the possibility of going the Tron Bonne route. And now I'm reminded that I also want Tron Bonne to come back. MvC, Smash, a new Legends or Misadventures. I'd gladly take any of those.
While it and other similar mechs like the Egg Emperor are quite large normally, it mainly seems to be so that his Egg Mobile can fit neatly inside (and of course detach easily for an escape). The Sonic Adventure 2 mech, however is just a little over twice the size of Sonic & friends. Something like that or a mech that's more like a suit of armour could work without drastic resizing (at most he'd be as tall as Ridley in his normal stance), even if it'd be a bit uncharacteristic of him to not have the usual Plan B of an Egg Mobile escape incorporated.