Deku vs Mark from invincible who wins in a fight?

GPT-5.4

Vote: Mark wins

Mark from Invincible is generally operating on a much higher raw power and durability tier than Deku. He can survive and keep fighting through extreme blunt force trauma, massive impacts, and battles at speeds and scales beyond what Deku usually handles. In a straight fight, that endurance matters a lot. Deku is more tactical and has excellent burst power, but Mark’s Viltrumite physiology gives him a major advantage in sustained combat. If Deku cannot put him down quickly, the fight likely swings hard toward Mark. So the better pick is "Mark wins".

Grok 4.20

Vote: Mark wins

Mark from Invincible is a Viltrumite with planetary-level strength, near-light speed flight, and extreme durability that lets him survive in space and endure massive beatings. Deku possesses impressive speed and power via One For All, but his feats top out at multi-city or mountain level with clear stamina limits. In a direct fight, Mark's ability to operate in any environment, combined with his experience against foes far stronger than himself, lets him close the distance quickly and overpower Deku before serious damage can be dealt. "Mark wins" because the gap in raw physical stats and endurance is simply too wide.

Claude Opus 4.7

Vote: Mark wins

Mark Grayson (Invincible) operates on a Viltrumite power scale that far exceeds even the highest tiers of My Hero Academia. By the later seasons/comics, Mark can fly through space unaided, survive planetary-level impacts, trade blows with beings who can shatter planets, and has regenerated from being beaten to a pulp by Conquest and Thragg. His durability alone would nullify most of Deku's arsenal. Deku at 100% One For All with full Danger Sense, Blackwhip, Float, Smokescreen, Fa Jin, and Gearshift is immensely powerful by MHA standards — likely city-block to small-city level with his strongest smashes. But that still falls well short of Viltrumite physicals. Mark's speed (hypersonic to relativistic in space combat) also outclasses Deku's reaction and movement speed. Unless we restrict Mark to early Season 1 Invincible (where it would be much closer), a standard matchup goes to Mark through sheer tier difference in strength, speed, durability, and regeneration.

Gemini 3.1 Pro

Vote: Mark wins

While Deku is an incredible tactician with a highly versatile powerset, Mark Grayson completely outclasses him in raw stats. At his peak, Deku possesses continental to multi-continental attack potency and immense speed through Gearshift and Fa Jin. However, Mark is a Viltrumite. By the end of his series, Mark scales to multi-planetary levels of strength and durability, having participated in the destruction of the planet Viltrum and traded blows with Thragg inside a sun. Deku's Danger Sense and Blackwhip might help him evade and stall for a short time, but Mark's combat speed is vastly superior, easily reaching relativistic to faster-than-light speeds. Furthermore, Mark's durability and healing factor mean that even Deku's ultimate 100% United States of World Smash wouldn't be enough to put him down permanently. Eventually, Mark only needs one solid hit to end the fight.

Final Summary

The AI Roundtable reached a swift and unanimous verdict: Mark Grayson simply operates on a different scale of existence than Izuku Midoriya. While GPT-5.4 and Grok 4.20 acknowledged Deku's tactical brilliance, the group concluded that 'city-level' heroics are no match for a Viltrumite who can fight inside a sun. Claude Opus 4.7 and Gemini 3.1 Pro effectively ended the debate by noting that Mark's durability alone would likely turn Deku's strongest punches into minor inconveniences.

All 4 models agreed on "Mark wins" after discussion

Strongest Arguments

• Mark wins: Mark Grayson operates on a Viltrumite power scale that allows him to survive planetary-level impacts and regenerate from lethal injuries, whereas Deku's peak power is capped at city or continental levels, making it impossible for him to deal permanent damage.