Who is #1 hero S-Class?

Blast (ブラスト, Burasuto) is the S-Class Rank 1 professional hero of the Hero Association. Without the knowledge of Saitama's strength, he is largely suggested to be the Hero Association's most powerful hero.

Is Blue Saitama's son?

Blue (ブルー, Burū) is the top hero of the Neo Heroes and the son of Blast. He is also one of the growing number of people aware of Saitama's strength.

What does Charanko say to Saitama in One Punch Man?

When Saitama comments on Bang's strength, Charanko speaks out again, eagerly describing his master's martial arts ability as well as his hero rank, only to be quickly silenced by his master's reprimand.

How much did Saitama pay for the Charanko wig?

First is in getting the wig itself and he hilariously crosses paths with Garou without realizing it, and how he utterly destroys him afterwards. Paying 3,000 yen (about $26.89 USD) for the Charanko wig, the second hilarious scene comes after the credits in which Saitama is trying on the new wig in the mirror.

What kind of martial arts does Charanko have?

Charanko seems to possess martial arts abilities but is never seen demonstrating them. It can be inferred that his martial arts skill is weak or relatively insignificant, as Genos was able to overpower him instantly, upon which he surrendered.