Charanko

Charanko is Bang's only and last disciple before he is recently "expelled" for some reason that is anything to do with his master and his former number 1 disciple, Garou.

Appearance
Charanko has messy, light-colored hair and wears a white gi. He also boasts a muscular frame, although this is hardly indicative of his strength, or lack thereof.

Personality
Charanko is a loudmouthed braggart, arrogantly challenging Saitama and Genos for their disinterest in Bang's martial art without knowing of their ability. 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.

Paradise Group Arc
Charanko, along with King, makes a cameo when the Paradise Group throws a rock and destroys the dung-shaped figure atop Monier's building and screams in surprise at the action.

S-Class Hero Arc
Charanko appears when Bang demonstrates the Ryusui Gansai Ken to Saitama and Genos and becomes enraged at their dismissal of the martial art, challenging them both but is quickly subdued by Genos. He then boasts about his master's strength when Saitama notes it, only to be cut off by said master, who reprimands him for speaking out of turn. When the S-class heroes are called to the Heroes Association HQ, Charanko is left in charge of the dojo.

Garou Arc
While training with his master, Charanko felt something strange with his master, and he wasn't himself. This cause Charanko ended up beaten and "expelled" for some unknown reason, in which his master told him that he had been hold his back in a past half-year. He later visits Bang's allies at Saitama's apartment to give a news about his master's strange attitude in a recent day. Not only he's surprise that Saitama and Genos gains more allies like King and Blizzard of Hell, he finds out from Genos that Bang's strange attitude was because of his former disciple turned a wanted villain, Garou is still at large on starting his hero hunt. Something Charanko doesn't realize about his master's strange attitudes remains anything to do with Garou.

Abilities
Charanko seems to possess martial arts abilities, but is never seen demonstrating them, as Genos was able to overpower him instantly, upon which he surrendered.