5. Black Sperm – Black Sperm
Black Sperm is a high-ranking member of the Monster Association and is classified as a Dragon-level disaster.
Black Sperm can divide into countless microscopic cells, causing him to have to be killed 11 trillion times before he completely dies.
Later, when Black Sperm reappeared in the world with a new, more golden appearance, called Golden Smurf – Golden Sperm, he could even keep up with the strength and speed of the monster Garou.
4. Tatsumaki
If Saitama is the strongest hero in terms of physical strength, Tatsumaki is easily the strongest when it comes to mental strength.
3. Boros
Boros is the leader of a space-wide gang of gangsters called `Dark Matter`.
Boros is truly a complete warrior.
2. Garou Monster
The human version of Garou is already very strong and only Saitama can defeat him with a single blow.
Besides increased strength, speed and endurance, Garou monsters still have the same fighting techniques as when they were humans.
The author of ONE himself once commented that the heroic hunter in his awakened form has power no less than that of Lord Boros.
1. Saitama
Saitama is the main and strongest character of the famous One-Punch Man manga series today.
