270lb 6'6 David Tua with Oliver Mccalls chin, an 81 inch reach, Calzaghes stamina and Pacquiaos handspeed Gennady Golovkin but he can summon prime Samuel Peter to fight alongside him each round Tyson Fury with Ray Mercers chin, Amir Khans handspeed and Wilders power Pernell Whitaker but you have to battle 5 of him per round. Normal Sonny Liston Rocky Marciano with brass knuckles Riddick Bowe but he has 4 arms and the style, speed and power of Mike Tyson.
GGG. Could you imagine that? You’re getting sucker punched by an elite fighter no matter what you try he’d never lose. GGG would also be at MW when he conjures “Who necks?” Best meta fighter here. But in a tournament it’s probably Marciano he’s quite possibly fatally wounding everyone he touches. women in brass knuckles could take a guy out relatively easily.
Bowe and Fury are the most op from this list but those guys still stand no chance against Lennox Lewis
A shot like the one which knocked out Jersey Joe Walcott from Rocky Marciano with Brass Knuckles on would kill any of them.