Lord Boros is the mirror antagonist to Saitama. Like Saitama, he was too powerful to find a worthy opponent and became extremely bored. Boros serves as a reminder of what Saitama could be if he didn't have a heroic foundation.
God is the overarching antagonist of the Monster Association arc in the manga One Punch Man and possibly the entire series. It is a mysterious entity that desires the eradication of all humanity.
Boros was the first on-screen opponent of Saitama that survived after getting punched, much to the hero's surprise. In fact, he is the very first of Saitama's opponents that took more than one punch to kill; Saitama even considered him to be the strongest opponent he had faced so far.
Mugen is known to run into trouble due to personality. He doesn't really care about the other person unless they start bothering him in which case he simply beats them up. Saitama will most likely not appreciate being around Mugen and he will definitely try to get away from Mugen as quickly as he can.
The latest chapter of One-Punch Man shows the continuation of the devastating clash between Saitama and Tatsumaki, with everyone's favorite bald hero unwillingly caught in the middle of what is shaping to be a hilarious love triangle with the two Psychic Sisters.
However, Garou proves too powerful for Blast, and he uses Gravity Fission Nuclear Fission attack to dominate the S-class hero. Garou now realizes that Saitama wasn't fighting at his full potential. So, to bring out the baldy's real strength, Garou kills Genos by taking out his core.
Saitama, also known by his hero name Caped Baldy, and also as One Punch Man, is the titular protagonist of the webcomic/manga/anime series One Punch-Man, and the most powerful known being in the series.
The only event that came close to becoming a God-level Disaster Threat was the meteor in the first season, which Saitama managed to stop easily. Otherwise, for now, it seems like the only God-level threat that the universe might face is from God himself, who has made himself known numerous times in the manga.
The title protagonist, Saitama (サイタマ), is a bald-headed 25-year-old man who is bored of fighting because he is able to effortlessly defeat enemies with a single punch.
There's literally nothing Saitama can do against Ryuk, the god of death. As he cannot touch him, he cannot use his signature move, Serious Punch, against Ryuk. Once Saitama's name is written in the notebook, he is gone.
Genos has become Saitama's companion and the closest thing he has to a best friend. He is also the person who he spends most of his time with, since Genos moved into Saitama's apartment to live with him.
The big reveal is that when Saitama finally meets him, he will put two and two together and find out that Blast is his dad. Yes, he is supposed to be an elusive character, but especially with the other stuff we know about him, this just makes sense.
After receiving what seem-to-be a fraction of power from "God", Garou mutated, gained various powerful abilities, and became capable enough to fight against and even force Saitama to get serious before ultimately being defeated.
Saitama vs cat
[ Still trying to do the math on how, the only thing to ever actually damage Saitama in the series is a cat scratching his face.
Despite having received God's powers, there wasn't anything Garou could do to defeat the Caped Baldy. Suffice to say, Saitama hasn't lost a single fight in the One Punch Man manga so far.
Saitama (1000 IQ) VS 1.000. 000 Colossal Titans: 1.000 IQ, 100 IQ, 10 IQ!
Blue is a teenager of roughly average height and muscular build with light hair that falls over his face in bangs. His eyes have multicolored irises, being light near the center but dark towards the outside, resembling his father Blast.
The mere comparison of strength between the two characters is crazy. Goku is an extraterrestrial being who has to lose a fight in order to get stronger. Saitama is a man that can defeat any foe with a single punch. If the two of them were to face off in a one-on-one battle, Saitama would easily win.
With Garou killing Genos, Saitama looked highly irritated and angry. He didn't waste a single moment and decided to use one of his killer moves and land a serious punch on Garou.
Genos has the appearance of a 19-year-old boy with a face and hair similar to that of a human.
Saitama and Tatsumaki's Marriage Life 3&4 + special Translated.