Noblesse, that one has a truly OP main character;] it's a web comic, and it starts off slowly, but give it a chance, you won't regret it. It's great how the main character doesn't really have any equals, and the manga is still interesting. No matter how strong the opponent, he makes them all kneel with one word 😁 .Latest chapters are especially great 🙂 It's about vampires, but even though I don't really like those vampire themed ones, this one got me hooked 🙂

Onepunch-Man - he is the definition of overpowered

OMG, OnePunch man was ridiculously awesome. Thanks.

Vampire Juuji Kai's main character is OP.

Mahouka Koukou no Reittousei as well.

Mob Psycho 100 (same creator of One-Punch Man)

Black Haze (Webtoon)

The Gamer (His abilities are pretty OP but needs time to train / perfect them)

World Customize Creator (He can customize literally anything)

Tower of God (Webtoon)

God of Highschool (Webtoon)

Saiki Kusuo No Sainan (MC owns all the psychic powers in the world)

Sakamoto Desu Ga? (MC is .... Unbeatable)

Ichi (MC is blind yet still able to cut down her enemies like a boss)

The Devil King is Bored (Webtoon and as the title says, the devil king is indeed bored)

Have you guys never heard of Jesus(actually Kira) Yamato from Gundam Seed ? Booo.
Repent and join the church(not a joke) now !
That man and Fukuda took 35 hours out of my live i still need back.
It´s more of an anime franchise but good god if he isn´t the biggest Gary Sue EVER then i don´t know who is. He only laughs at nuclear explosions 😎 and get´s all the space pussy.

I jumped of Mahouka Koukou no Rettousei early but i heard the lead was overpowered as hell. Azumi beeing unbeatable is the entire point of the story and a positive example.
The manga may be the best chanbara i have ever read.

I also read EU/US comics and am a librarian.
Manga-Masters, My ANN-Lists + Imdb