8 Demon Slayer Fighters Who Could Actually Defeat Muzan Kibutsuji

In the Demon Slayer universe, even reaching Muzan Kibutsuji is a tall order—actually landing a killing blow is another problem entirely. Muzan’s power isn’t just about raw strength; it’s reinforced by a grim resilience built from his “five brains and seven hearts,” meaning he can keep functioning even when the odds say he shouldn’t. And with the Twelve Kizuki acting as escalation points for that threat, the endgame doesn’t become a simple duel—it turns into a race against sunrise, where only a handful of Demon Slayers manage to survive long enough to get away. On top of that, Muzan refuses to lose quietly, using his influence to attempt turning Tanjiro into the next Demon King.

So why do some characters seem to stand out against Muzan’s overwhelming “essence”? In practice, the advantage goes to approaches that directly counter his special advantages—especially those rooted in Sun Breathing and other abilities whose nature gives Demon Slayers a real fighting chance.

8 Lady Tamayo’s Anti-Kibutsuji Drug Is a Gift That Keeps on Giving

Lady Tamayo’s medical focus—medicine, biology, and chemistry—combined with Shinobu Kocho’s knowledge of wisteria-based poisons is framed as a major reason Muzan ultimately falls. The Anti-Kibutsuji drug doesn’t just harm him; it behaves like a chain reaction that locks away a portion of his capability, gradually forcing his power into a biological spiral of deterioration. The key detail is that Muzan has no real counter for it, letting Tamayo systematically weaken both his body and his abilities from the inside.

Tamayo’s value isn’t limited to having the drug in hand. She’s also portrayed as having the medical expertise to apply it at the right moment, including something as significant as severing the notorious cellular bond with Muzan. Her determination and capacity for planning, reinforced by her connection to Yushiro throughout Demon Slayer, are presented as a “packaged” advantage: once Muzan absorbs her body, the anti-Muzan effect keeps working, turning her into a lethal problem long after the initial contact.

7 Yushiro Is the Ultimate Guerrilla Against Muzan’s Power

Yushiro isn’t positioned as a viable option for an open confrontation with Muzan. Even though his mindset is described as pure resolve, his demon strength and combat know-how don’t match what a direct fight would demand. Instead, Yushiro’s niche is support—operating from the shadows and attacking the situation around Muzan rather than trying to outduel him head-on.

That support is powered by his Blood Demon Art, which leans into perception manipulation and invisibility. The article emphasizes that this makes him unusually effective against Muzan, even compared to ninja-like anime archetypes outside Naruto. The recurring point is that Yushiro’s blindfold mastery disrupts Muzan repeatedly. Beyond helping Tamayo remain hidden from Muzan’s notice, Yushiro is also credited with keeping Demon Slayers out of reach.

Rather than “soloing” the Demon King, Yushiro’s power is framed as logistical: he’s involved in actions like disrupting Nakime and assisting the Kakushi and the Hashira during high-stakes combat. In other words, his strength is in improving how other characters can land damage, not in trying to be the one character who ends the fight alone.

6 Genya Shinazugawa Could Change Everything With a Bite

Genya Shinazugawa is set apart from other Demon Slayers immediately: he can’t use breathing styles, and he brings a gun to a sword fight. That difference matters, but the article’s main argument is that Genya’s “unusual metabolism” combined with his adaptability gives him a rare kind of teamwork potential with the rest of the cast. The framing is blunt: if you can’t shoot demons dead, then—at least in Genya’s approach—you eat them.

His role in Demon Slayer is tied to a distinctive ability to metabolize demon flesh in ways that strengthen him. This is described as a temporary boost to his power that scales with the rank of the demon he consumes. During the fight against Hantengu, the article claims that Genya’s flesh-based power-up doesn’t just raise his strength—it can also grant traits that resemble aspects of the demon’s essence. That makes his demon-flesh intake into combat support for Tanjiro and Nezuko, effectively turning one character’s consumption into team-wide benefit.

From there, the hypothetical is straightforward: if Genya were to swallow part of Muzan, he could reach a level that would put Muzan on the back foot—or, at minimum, keep Muzan from enjoying his own dominance for as long as possible.

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5 Nezuko Kamado Could Just Take Muzan for a Daytime Stroll

Nezuko is credited with achievements that even other demons—including the Demon King—can’t duplicate. She has developed the ability to endure walking in sunlight without being harmed by it. She also learns how to survive without consuming humans. Beyond those survival mechanics, the article highlights that Nezuko hasn’t lost her emotional attachment to humanity. When you combine her explosive demon blood with a will focused on protecting her loved ones, she becomes a kind of threat Muzan can’t “solve” in the same way he solves other problems.

Her awakened state in Demon Slayer is framed as particularly dangerous to Muzan. While she’s not portrayed as a martial arts prodigy, the article argues she still has sharp instincts. In a death match against Muzan, her brawler side would supposedly become the deciding factor quickly. And because Muzan is obsessed with consuming her power, the pressure point is time: Nezuko would only need to keep the Demon King engaged long enough for sunrise to finish the job, reducing him to ash.

4 Obanai Iguro Could Make Muzan Start Fearing Snakes

In terms of raw combat endurance, Obanai Iguro is presented as one of the Hashira who can last the longest when fighting Muzan. He may not be described as the physically strongest among them, but the article says he compensates with mind-bending combat speed and deep mastery of Serpent Breathing.

The “secret weapon” isn’t only technique, though. Once he earns the Demon Slayer Mark, Obanai can fully unleash the anti-demon power of his Nichirin Blade and combine it with the Transparent World technique. The argument here is that he’s already positioned as one of Demon Slayer’s strongest sword fighters, and with Kaburamaru acting as guidance, he can refine his boost into something Muzan may not treat as a joke. The article concludes that Obanai has a real path to either killing the Demon King outright or injuring him severely enough that sunrise can complete the outcome.

3 Gyomei Himejima Is Strong Enough To Overwhelm Muzan

Gyomei Himejima is described as the strongest Hashira, backed by exceptional physical ability amplified by his Nichirin spiked flail and axe. The article frames him as a force Muzan would struggle to dismiss, even if Muzan tried to ignore him. Like certain other Hashira, Gyomei can awaken the Demon Slayer Mark and use the Transparent World technique, which the article claims becomes even more threatening in his case due to his phenomenal senses.

Where Gyomei stands out is in the combination of offense, survivability, and team coordination potential. The text argues that he can knock down Muzan’s arrogance, then help end the fight with assistance from others. His abilities and skills are portrayed as merging into a single combat system that keeps Muzan’s stamina under pressure—especially through regeneration and the restoration of balance after sustained blunt-force trauma—until the sun arrives. The limitation is blunt: Gyomei can only take so many injuries before his edge against Muzan dulls.

2 Tanjiro Kamado Can Cast a Beam on Muzan’s Weakness

Tanjiro Kamado’s ancestral dance and selfless nature are presented as the foundation of the argument for Muzan’s downfall. While Tanjiro can’t defeat Muzan alone, his breathing style is framed as a serious force multiplier within the Demon Slayer team effort. Sun Breathing is said to deal significant damage to Muzan, and the article emphasizes that this is a weakness the Demon King can’t simply look away from.

It goes further by suggesting that if Tanjiro had more time to fully master Sun Breathing, he could get closer to Yoriichi’s level—enough to inflict severe harm to Muzan even in a one-on-one duel. Still, even with the risk that Muzan’s influence could hijack Tanjiro’s Demon King form, Tanjiro is described as having a reasonable chance when he’s supported.

Of all the breathing techniques in Demon Slayer, Sun Breathing is framed as one of the most impressive. The article also points readers to the idea of learning all the moves it allows its users to perform.

1 Yoriichi Tsugikuni Gives Muzan Nightmares Even Centuries Later

Yoriichi Tsugikuni is treated as unmatched across nearly every relevant metric. The article credits him with rare Demon Slayer Mark traits and a Selfless State, plus impeccable Sun Breathing mastery and constant access to the Transparent World. In combination with his physical attributes and other skills, this blend is said to turn a Muzan-versus-Yoriichi showdown into something that leaves trauma behind—so severe that the Demon King is haunted for hundreds of years after just a few seconds.

Even though Muzan escapes the death grip created by Yoriichi’s mastery, the piece argues that the lethal mix of raw Demon Slayer skill still makes Yoriichi the “mind goblin” that follows Muzan throughout the series. Among the strongest characters in the ranking, Yoriichi is presented as the closest to killing Muzan by himself. The final claim is that the painful echo of his ability in Muzan’s mind isn’t exaggerated—Yoriichi has the most impressive potential to end the Demon King.

Demon Slayer

Demon Slayer: Kimetsu no Yaiba is an action anime based on Koyoharu Gotouge’s shonen manga. Set in Japan during the early 20th century, it follows Tanjiro as he seeks revenge for the murder of his family while also trying to save his sister. He joins the Demon Slayer Corps as they work to eradicate demons led by Muzan.