Nobody could have anticipated that Hero Killer: Stain would join forces with All Might in the climactic battle against All For One. Typically represented as a figure of terror, Stain is driven by the desire to rid the world of imposters masquerading as heroes. However, the first episode of My Hero Academia’s final season revealed his integral role in the upcoming war. If you’re curious about Stain’s fate—whether he meets his end or survives the showdown between heroes and villains—stick around as we delve into his status by the conclusion of the series.
Spoilers Warning:
This article contains spoilers about Hero Killer: Stain. Proceed at your own risk.
Does Hero Killer: Stain Make a Comeback?

Previously in My Hero Academia, Deku, Shoto, and Iida managed to overpower Stain while he was on the loose. After his imprisonment in Tartarus, he staged an escape during an attack launched by All For One and his Nomus. Fans have long speculated about his remaining role in the narrative, especially when he provided All Might with pivotal intel about the villains who had escaped Tartarus. In a twist of fate, Stain emerged as an unexpected ally for All Might, helping him regain his hero identity.
Moreover, when All Might found himself endangered by All For One, it was Stain who tracked him down, using the villain’s spilled blood to pinpoint his location. In a critical moment, Stain joined the conflict between Armored All Might and a younger version of All For One, proving that his dedication, however dark, can lead him to act in favor of the heroes.
Who Was Responsible for Stain’s Demise?

Upon entering the battlefield, Stain wasted no time using his “Bloodcurdle” quirk to seize All For One. For a brief moment, the formidable villain appeared vulnerable. However, All For One had anticipated Stain’s betrayal and activated a series of contingency plans. He leveraged multiple quirks to escape from Stain’s control, including the Forced Quirk Activation to unleash his powers and Bloodlet to drain his own blood.
The interplay of these abilities rendered Stain’s quirk ineffective, allowing All For One to escape and subsequently assault him. Aware he couldn’t underestimate Stain, who voiced his admiration for All Might while battling, All For One delivered a lethal blow, ultimately taking Stain’s quirk for his own use.
I never benefitted from higher education. It was you who taught me what a hero is. Live on, triumph, my everything, my All…!
This tragic fate underscores that while the Hero Killer sought redemption, his end came brutally at the hands of All For One, even as he stood by the hero he idolized. How do you feel about Stain’s demise in the My Hero Academia series? We invite you to share your thoughts in the comments.
As you continue to explore the My Hero Academia universe, be sure to check out more articles and insights at Moyens I/O.