Demon Slayer: 6 Strongest Characters in the Infinity Castle Arc, Ranked

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As with many action-packed anime series, the final story arc of Demon Slayer features the strongest characters on both the hero and villain sides. The climactic battle brings all of their most powerful fighters together, determined to win and prove who is the ultimate victor.

The final battles featured more powerful demons – they were faster, stronger, and used abilities that almost seemed like magic. As a result, most of the strongest characters on this list come from that part of the story, though a few exceptional Demon Slayers also reach this level of power. Now, let’s take a look at the most powerful characters in the Infinity Castle arc.

Gyomei Made His Mark As The Strongest Hashira

Technique: Stone Breathing

  • The strongest Hashira of the current era.

Even though Tanjiro learned the rare Sun Breathing technique, Gyomei ultimately proved to be the stronger fighter. Gyomei’s Stone Breathing skills and immense physical strength were unmatched, especially showcased during the battle against Upper Rank 1 in the Infinity Castle. Many fans agree that his contributions were crucial to defeating Kokushibo, solidifying his reputation as the most powerful Hashira.

Akaza Took On The Combined Strength Of Giyu And Tanjiro

Technique: Destructive Death

  • Upper Moon 3.

From the moment Akaza first appeared and defeated Rengoku, fans predicted he’d be a major challenge in the final battle. This proved true when he fought both Giyu and Tanjiro simultaneously, despite them having unlocked their Demon Slayer Marks and mastered the Transparent World technique. Though Akaza nearly defeated both of them, he ultimately chose to end his own life rather than continue the fight. If he hadn’t changed his mind, he would have won against Tanjiro and Giyu.

Douma Showed Incredible Mastery With His Technique

Technique: Cryokinesis

  • Upper Moon 2.

Wow, Douma was seriously one of the strongest demons we saw! Like Akaza, he was just too much for any single Demon Slayer, which is why Inosuke and Kanao had to fight together. Even then, they wouldn’t have stood a chance if Shinobu hadn’t sacrificed herself to poison him from within. And his Blood Demon Art? It was insane! The way he controlled ice to create these huge, powerful structures felt like it belonged in a completely different, more fantastical series – it was terrifying to watch, honestly.

Kokushibo Blends Slayer Arts With Demonic Powers

Technique: Moon Breathing

  • Upper Moon 1.

Kokushibo began as one of the first Demon Slayers, but he later became a demon himself. This allowed him to combine his demonic powers with his incredibly powerful Moon Breathing technique, making him Muzan’s strongest follower. It took nearly all the remaining Demon Slayers working together to finally defeat him, as his Moon Breathing was far superior to anything his opponents could handle. Similar to Akaza, he ultimately chose his own end, allowing the heroes to defeat him once he realized how monstrous he had become.

Muzan Was the Progenitor Of All The Demons In The World

Technique: Biokinesis

  • The father of demons.

The story of Demon Slayer started with Muzan, who created all the demons. While some viewers were let down by his Blood Demon Art – which simply involved using incredibly powerful whips – his immense strength and complete control over every demon made him a fitting final villain. This showed that even with a relatively simple ability, Muzan was terrifyingly powerful, and defeating him required the combined efforts of the entire Demon Slayer Corps.

Yoriichi Was The Progenitor Of Breathing Styles And The Greatest Slayer Ever

Technique: Sun Breathing

  • The original Demon Slayer.

Yoriichi was the first and most important figure in the fight against demons. About 500 years before the story begins, demons were even more powerful and dangerous because no effective defenses existed. He developed incredible swordsmanship skills and created Sun Breathing, the original technique that all other breathing styles are based on.

Sun Breathing is the strongest technique in the world of Demon Slayer, but only Yoriichi Tsugikuni ever truly perfected it. This allowed him to wield the power of the sun with his sword, making him untouchable – even Muzan Kibutsuji couldn’t harm him. Despite appearing briefly, Yoriichi’s incredible strength establishes him as the most powerful character in the entire series.

Demon Slayer can be streamed on Crunchyroll and Netflix.

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2026-01-14 02:36