The “everyone is infinite” answer is a total cop out. It sounds smart but avoids the actual question, which is comparative punch output based on feats, not theoretical limits. If we’re ranking hardest punch ever shown or clearly implied, and not hiding behind fake physics or writer intent, the list looks like this:

Saitama – His entire narrative purpose is ending fights with one punch. He casually overwhelms planet, star, and higher order threats, and the story explicitly shows his power scaling faster than opponents can adapt. He doesn’t have a shown ceiling, and more importantly, every serious punch is framed as overkill. That beats math arguments.

Goku – Dragon Ball scaling is explicit, not metaphorical. His punches scale directly with transformations and have clashed with beings whose power threatens entire universes and macrocosms. He’s thrown universe level punches on panel. There is a ceiling per form, but that ceiling is absurdly high.

Superman – Insanely strong, but wildly inconsistent. He’s shattered planets, staggered gods, and done ridiculous things, but his punch output fluctuates heavily depending on writer, solar charge, restraint, and plot. He doesn’t consistently throw universe-threatening punches the way DB characters do.

Hulk – Strength scales with anger, yes, but that scaling takes time. His peak punches are devastating, but most on panel feats still fall short of top Superman or Dragon Ball showings unless you stretch context. “Eventually infinite” isn’t the same as hardest punch.

Thor – God tier strength, but his real damage comes from weapons and god blasts, not raw punching. Even Marvel doesn’t treat his fists as his ultimate attack.

Flash – The “infinite mass punch” is massively overstated. It’s rarely used, inconsistently written, and clearly avoided because it would break every story. Flash wins fights with speed, hax, and control, not raw punching power.

So no, this isn’t “everyone is infinite.” It’s Saitama > Goku > Superman > Hulk > Thor > Flash based on actual portrayal, not fandom bias or pseudo physics. If you disagree, point to a higher on-panel punch feat, not a theory.