Blast (ブラスト, Burasuto) is the S-Class Rank 1 professional hero of the Hero Association. He currently appears to be going to various places in order to collect the mysterious cubes, which is a hobby of his. Only a few select Hero Association staff members have the means to communicate with him. He is Blue's father.
Tatsumaki. The Rank 2 S-Class Hero doesn't seem all that powerful. However, that's precisely what makes Tatsumaki so dangerous. Her Esper abilities are pretty powerful and can destroy most demons with ease.
Iaian (イアイアン, Iaian) is the A-Class Rank 2 professional hero of the Hero Association and the top disciple of Atomic Samurai.
#3 - Silver Fang.
King (キング, Kingu) is the S-Class Rank 7 professional hero of the Hero Association. In public, King is known as "The Strongest Man on Earth" ( 地 ち 上 じょう 最 さい 強 きょう の 男 おとこ , Chijō Saikyō no Otoko) and "The Heroes' Hero".
Blast is the overarching protagonist of One Punch Man. He is the S-Class Rank 1 hero of the Hero Association. Other than Saitama he is the strongest known hero of the Hero Association.
4) Metal Knight
Metal Knight is one of the characters in One Punch Man whose true intentions and power levels are unknown. There are many who believe that he is capable of taking over the world using his army of robots and even the Heroes Association is unaware of his true power.
Given his monstrous strength, one would assume that this character is an S-class hero, but the truth is that he is only a B-class hero in the anime when he defeated Sea King during the first season of the One Punch Man.
Pig God ( 豚 ぶた 神 がみ , Butagami) is the S-Class Rank 10 professional hero of the Hero Association.
King is, however, really "invincible" in videogames, he is stated to have never lost a fight in videogames and could easily defeat Fubuki's team when the latter challenged Saitama's group to a video game showdown, King also defeats Saitama with absolute no effort in video games, despite the latter's having plenty ...
Under the Hero Association, he is assigned the hero name Caped Baldy (ハゲマント, Hagemanto; Viz: Bald Cape) and is currently A-Class Rank 39.
Saitama (1000 IQ) VS 1.000. 000 Colossal Titans: 1.000 IQ, 100 IQ, 10 IQ!
Although the hero is beyond even the most powerful member of S-Class, Saitama isn't recognized for his abilities due to a broken system that privileged his test-taking ability over his raw attributes, which tested impossibly high.
Saitama has slowly risen up the ranks to become an A-Class hero after completely flunking the written test. Despite his official rank being so low, pretty much everyone fan of One-Punch Man knows that Saitama is the strongest character in the entire show bar none.
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.
King. King (キング, Kingu), ranked 7 at the time of the S-class meeting, is a hero with large claw-scars down the left side of his face. The association believes that he is the strongest man on the planet and that the other S-class members show him great respect.
To that, Saitama responded by saying that he didn't even consider Fubuki as his friend. She was a mere acquaintance. Thus, it is safe to say that Saitama does not have a girlfriend in the One Punch Man series.
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.
It's specially mentioned that S-Class was created for outliers with abnormal physical ability so that they didn't have to waste time in the lower ranks. Saitama can't have been the first person to have broken records for physical tests.
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 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.
Saitama is a seemingly unbeatable hero who can defeat any opponent with just one punch. While Gojo's abilities are impressive, it's hard to imagine even he could withstand a punch from Saitama. In a battle between the two, it's likely that Saitama would overpower Gojo with his raw strength.