10 Anime With an Op MC That Cannot Be Defeated

If you’ve ever wondered what it’s like to have a protagonist who’s not just strong, but practically untouchable, then you’re in for a treat. We’re about to delve into anime where the MC is so OP that they challenge the very definition of invincibility.

But here’s the real question: why are these anime so darn fun to watch? Why do they have fans from all corners of the globe absolutely hooked? The answer is simple: these shows provide an electrifying escape from the ordinary. They transport us to fantastical worlds where the limits of strength, power, and possibility are pushed to the extreme.

From mind-bending magical battles to epic clashes of wills, these shows are a testament to the boundless creativity of the anime universe. So grab your snacks, get comfy on the sofa, and let’s explore the best anime with OP MCs that can’t be defeated!

10. One Punch Man

When One Punch Man aired in 2015, it redefined superhero action in the most uproarious way. After all, it’s about a hero who’s so strong that battles are like a walk in the park for him. Despite his simple appearance and mundane life, he’s so overpowered that he knocks villains out with… you guessed it, one punch!


Bored from his unmatched strength, Saitama is on a quest to find an opponent who can finally give him a challenge.

With its unique blend of over-the-top battles and tongue-in-cheek humor, this anime guarantees an unforgettable experience that will leave you craving more superhero absurdity and epic showdowns. If you’re up for action that’s as wild as it is hilarious, this anime is your jam.

One Punch Man12Action, Comedy, Super Power

9. Overlord

Gamers have surely imagined more than once how cool it would be to be trapped in a game they love to play. While this probably won’t be possible in the next couple of years, we can compensate by seeing it happen in Overlord. In this anime, being indefinitely stuck in an MMORPG game becomes a reality for a player called Momonga.

You might be asking how that happened. Well, when the game servers were scheduled to shut down, he decides to stay logged in. To his surprise, Momonga became stuck in-game as his powerful character. Now, as the overlord of his own kingdom, all that’s left is to conquer and explore the new realm.


Overlord invites you to explore a universe where morality is anything but black and white, offering a thrilling escape for fans of intricate fantasy narratives.

Overlord13Action, Adventure, Fantasy, Magic

8. No Game No Life

No Game No Life is an isekai series that thrusts you into a realm where everything is determined by games. This anime doesn’t feature just one OP MC; it has two powerful protagonists – Sora and Shiro, the genius siblings who are also gaming prodigies. They find themselves transported to a fantasy world where everything, from petty disputes to full-on wars, is decided by games.

As for being overpowered, Sora and Shiro’s collective prowess isn’t just limited to pixelated screens. Their sharp thinking and clever tactics help them outsmart foes even in the craziest challenges.

No Game No Life isn’t just an anime; it’s a masterclass in strategy, wit, and the art of the game. Join Sora and Shiro as they navigate a world where challenges are won through cunning and quick thinking. If you’re aching for an anime that’ll make your brain cells dance, this is the one to watch.

No Game No Life12Game, Adventure, Comedy, Supernatural

7. The Irregular at Magic High School

In The Irregular at Magic High School, the real magic is in the overpowered protagonist, Tatsuya Shiba. This series isn’t your typical high school drama – it’s a school anime that’s all about futuristic technology and spellbinding duels.

Tatsuya may seem like an average student, but appearances can be deceiving. He’s got an incredible knack for unconventional magic and combat strategies. He’s like a walking tactical mastermind, and his magical prowess is unbelievable. Whether he’s using his powers to dismantle enemies or navigate tricky situations, Tatsuya is the definition of OP.

For those who love mind-bending magical showdowns, tactical battles, and a touch of sibling rivalry, The Irregular at Magic High School is an absolute treat.

Mahouka Koukou no Rettousei26Action, Magic, Sci-Fi, Supernatural

6. Sword Art Online

Sword Art Online blurs the line between reality and the game. It’s also an anime with a famously OP MC, Kirito. This teenager is a skilled gamer who finds himself trapped in a massively multiplayer online role-playing game. But here’s the twist – if you die in the game, you die in real life too. Kirito’s strength isn’t just in his sword skills; it’s in his unwavering determination to survive and protect others.


Ever wonder what it’s like to be unbeatable in some game? Just ask Kirito. His gaming skills are off the charts, and his adventures in Sword Art Online are a thrilling roller-coaster of emotions and action.

Whether you’re an avid gamer or just looking for an epic tale where technology and fantasy collide, you should give Sword Art Online a go.

Sword Art Online25Action, Adventure, Fantasy, Game

5. That Time I Got Reincarnated as a Slime

Imagine starting anew as a slime, but not just any slime – one with the ability to devour and absorb everything in your path. Rimuru Tempest, our slime protagonist, turns this seemingly mundane existence into an extraordinary adventure.

Rimuru’s overpowered status goes beyond the typical hero archetype. As a slime, he’s not bound by conventional limits, adapting and evolving with each encounter.


But there’s more to him than just having an OP ability. He’s not just gobbling up monsters and items to become stronger; Rimuru’s also a pro at diplomacy! You’ll witness him forming alliances and friendships with various creatures and building his own community, and it’s oddly satisfying.

In a nutshell, That Time I Got Reincarnated as a Slime isn’t your typical isekai tale. It’s a delightful blend of adventure, friendship, and creativity, all wrapped up in the slimiest package you can imagine.

Tensei shitara Slime Datta Ken24Fantasy, Shounen

4. Mob Psycho 100

In Mob Psycho 100, we meet Shigeo Kageyama, a pretty regular dude with some seriously not-so-regular psychic powers. But here’s the kicker: Shigeo, aka “Mob,” just wants to keep things chill and not go all “superpower rampage” on us. But when he lets his emotions loose, his psychic explosions are like fireworks on steroids.

Moreover, Mob’s psychic shenanigans aren’t just a display of strength. They’re a whirlwind tour through the maze of being a teenager, with a helping hand from his mentor, Arataka Reigen.


This anime serves up a visual feast, with jaw-dropping fights and mind-bending psychic craziness that reflect Mob’s inner struggles. If you’re up for an action-packed series that dives deep into characters’ minds, then Mob Psycho 100 should be at the top of your watchlist.

Mob Psycho 10012Action, Comedy, Slice of Life, Supernatural

3. The World’s Finest Assassin Gets Reincarnated in Another World as an Aristocrat

The World’s Finest Assassin Gets Reincarnated in Another World as an Aristocrat is pretty self-explanatory just by reading the title. What’s more, our MC hit the jackpot because he was reborn as the son of a noble family of assassins.

What sets this isekai anime apart and makes it binge-worthy is the OP MC, Lugh Tuatha Dé. Instead of dying as a loser, this guy was the strongest assassin even in the previous world. Moreover, he didn’t die as a teenager, he was already an older man when he passed away. This explains his overpowered nature in the new fantasy world; his strength isn’t out of the blue – he retains clear memories of his previous life.

So, if you’re craving an isekai anime that breaks the mold, The World’s Finest Assassin Gets Reincarnated in Another World as an Aristocrat is your golden ticket.

Sekai Saikou no Ansatsusha, Isekai Kizoku ni Tensei suru12Action, Drama, Fantasy, Mystery, Romance, Isekai

2. Hellsing Ultimate

Living in a dark and vampiric world certainly wouldn’t be pleasant. However, that’s exactly the world where Hellsing Ultimate takes place. Fans of supernatural action will find this anime classic their new obsession.

In Hellsing Ultimate, the protagonist Alucard, a powerful vampire, takes center stage with a charisma that’s as enchanting as it is eerie. His powers transcend the norm of being overpowered, making him the darkness’s worst nightmare. But this anime isn’t just about Alucard’s raw power – although that’s a major draw. It’s the spine-tingling plot twists, seat-gripping battles, and gothic ambiance that make this anime a global sensation.

The fusion of horror, action, and a touch of gothic ambiance creates an atmosphere that’s uniquely captivating. This winning formula has garnered a global following of fans who can’t get enough of the relentless battles, intricate plot twists, and the macabre charm that defines Hellsing Ultimate.

Hellsing Ultimate10Action, Supernatural, Vampire

1. Problem Children Are Coming from Another World, Aren’t They?

Is one OP MC enough to pique anime viewers’ interest? Creators of Problem Children Are Coming from Another World, Aren’t They? don’t seem to think so! This isekai anime might have slipped under the radar for some, yet it’s a hidden gem featuring not just one but three incredibly powerful protagonists.


Whisked away to a special place called Little Garden, these gifted teenagers are offered a rare chance to engage in high-stakes games that put their exceptional abilities on display.

With characters who are more than just overpowered – they’re practically unstoppable – this anime promises a dose of excitement and chaos. Forget about playing by the rules – Izayoi, Asuka, and You are rewriting the entire script with their overpowered abilities. It’s like they’re on a mission to prove that being ordinary is overrated.

Mondaiji-tachi ga Isekai kara Kuru Sou desu yo?10Fantasy, Supernatural, Psychological

Hi, my name is Mia, and I am the founder of 9 Tailed Kitsune. I am a big fan of esports, games, and anime. When I was around 7 years old, Phantom Thief Jeanne sparked my fascination for anime, and it has never faded! 🌟💖

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