Bang/Relationships

Saitama
Bang met Saitama when the giant meteor was heading towards Z-City. Bang was amazed by Saitama's strength and tried numerous times to recruit him into his dojo, but Saitama always turned him down. Bang will occasionally invite him to cookouts and vice versa. Bang recognizes Saitama's strength and respects him telling Atomic Samurai that there is an upcoming hero (referring to Saitama) far stronger than the swordsman's disciples and even surpassing the martial artist himself.

Genos
The two get along fairly well. Bang passes advice onto Genos whenever he needs it and Genos holds a certain amount of respect towards Bang due to his martial arts skills and rank in the hero association. Like with Saitama, Bang tried to recruit Genos for his dojo but is turned down, and this constant attempt of recruitment has caused Genos to lash out at him on occasion. Bang often worries about Genos' recklessness, lamenting on the fact that Genos is still young and faces monsters that are usually much more powerful than the cyborg.

Tatsumaki
Bang respects Tatsumaki, but is often irritated by her immaturity and her violent tendencies. Tatsumaki acknowledges Bang's presence despite outranking him as she stood down when Bang told her to after the Dark Matter Thieves' invasion.

Despite this, Bang also acknowledges Tatsumaki's abilities, calling her the "leader" during the Monster Association raid.

Atomic Samurai
Out of every hero in the Hero Association, Atomic Samurai only acknowledges and holds a deep respect for Bang. He once stated to Saitama that he only acknowledges the strong, which could be a reason for Atomic Samurai's respect to Bang, who is one rank above Atomic Samurai. His relationship with Bang is friendly, with a tad bit of rivalry between them, though this mild rivalry appears to be one-sided as Bang doesn't view Atomic Samurai as a rival. He also displayed concern for Bang when he was struck by Melzargard. Both heroes would go out fishing together and have a talk about how despite that they've aged, they're still sharper and stronger as ever.

Metal Bat
Bang sees Metal Bat as a young kid with great potential. According to the audiobooks, they have sparred in the dojo once before, due to Sitch wanting to introduce some of the S Class heroes to Bang's martial arts. Initially, Metal Bat had no interest in participating in this activity, but he eventually agrees to sparring with Bang. During their spar, Bang uses Water Stream Rock Smashing Fist to dodge and redirect Metal Bat's swings. Bang was surprised at how much power there was behind Metal Bat's attacks, stating that he only redirected half the power on one of his swings, and yet it still blew off the dojo's walls. Their spar gets interrupted by a phone call from Zenko, which forces Metal Bat to leave in a hurry.

Superalloy Darkshine
Bang and Darkshine share mutual respect towards each other.

Garou
His former teacher Bang taught Garou everything he knows about fighting. After Garou went on a rampage and attacked his fellow students Bang kicked him out of his dojo. After he heard Garou started hero hunting Bang recruited his brother and went out to stop Garou. During their confrontation in S-City, Bang beat up Garou and berated him. Even so, he was amazed when Garou could keep fighting, and advised him to stop fighting as he worried about his injuries. When Genos was about to fire his Spiral Incineration Cannon at Phoenix Man and Garou in an attempt to eliminate both of them, Bang showed clear concern for his former disciple, although he could not stop the cyborg from unleashing his cannon.

Despite being aware that the Hero Association staff members do not want him to join the big fight against the Monster Association due to them having doubts that he let Garou escape, Bang still went and tried to find Garou in the Monster Association Headquarters. While attempting to find him, Bang did fear that his former student may have become a monster.

After finally finding Garou in Z-City and seeing he has become monsterized with seemingly little to no humanity left in him, Bang decided to go all-out against him and tried to reach out to his former disciple. While battling Garou, Bang felt guilty as he had focused on his hero activities and neglected his students, feeling responsible for Garou going the wrong path. Declaring that he would quit being a hero, Bang asked Garou if they could become master and pupil once more.

When Heroes didn't know what to do with Garou, Bang was one of the people who defended Garou (Others: Metal Bat, King and Saitama) He said who wouldn't let him kill himself.

Despite the villainous acts he has committed, Bang ultimately still cares for Garou. Garou recognizes Bang's lingering affection for his former student from how different his punches were when he was expelled.

Charanko
After Garou went rogue and disabled many of Bang's disciples, Charanko was his top and only disciple that was left. They had spent time together at Bang's Dojo and Charanko was proud of him, showing displeasure when someone underestimated his master. When Bang decided to confront his former disciple Garou who went down the wrong path, he made an agonizing decision as he expelled Charanko, a disciple that he loved deeply.

Suicho
Little is known about Bang's relationship with Suicho. According to Suicho's grandson, Suiryu, Suicho used to be Bang's friend.

Bomb
Bomb is Bang's older brother and Bang respects him. The two work well together, with Bang being respectful towards his brother and appreciating his help, specifically for having joined Bang on the hunt for Garou.

In the past however, contrast to the present, Bang was far more condescending towards his brother. While there wasn't hostility between them, due to Bang's fighting sprees, Bomb came to beat Bang down with the latter, while not hateful of Bomb, willing to kill him to prove himself superior. It was only after Bang lost while realizing his brother held no murderous intent against him that Bang became more humble, having developed a defensive fighting style and even becoming a hero a long time later, both to show his brother how he has changed. Upon the encounter with Garou, Bang used the battle to reach Garou while also showing his brother that he could be like him with Bomb supporting him fully.