Bang/Synopsis

History
Bang owns a dojo passed down from generations, and uses the fighting style, the Water Stream Rock Smashing Fist, while his older brother named Bomb, is the master of the Whirlwind Iron Cutting Fist. Bang once participated in Super Fight tournament to promote his dojo and won. At some point, Bang had many students, his top student being Garou. One day, as Bang was away, Garou rampaged through the dojo, injuring many of Bang's students, including Sour Face, and incapacitating many others. Because of his actions, Bang beat up Garou and expelled him and because of the rampage, Bang lost all of his students.

The following section contains Webcomic spoilers. You have been warned manga-only readers.

At some point before the start of the series, Bang was ranked 77 in B-Class.

Giant Meteor Arc
Bang is left with an impossible task by the Hero Association, to stop a meteor of a Dragon-level disaster that is on a collision course towards Z-City. At the Hero Association, he meets Genos to whom he explains the disaster. However, he claims that it is an impossible task and advises Genos to evacuate the city. When the siren signals warning everyone to evacuate, Genos wonders what Bang is going to do, to which Bang replies that he will protect his dojo. He turns around and asks Genos if he has ever heard of the Water Stream Rock Smashing Fist fighting style, but to his surprise Genos has already left the building.

Bang later shows up when Genos is preparing to attack the meteor. He sees that Genos is losing his composure and calms him down. Bang then watches as Genos attempts to and fails to destroy the meteor. Suddenly Saitama appears and, wondering who he is, Bang witness Saitama strength by destroying the meteor with a single punch. Bang also saved Genos from the debris of the meteor

Bang later stands on a roof, watching Tanktop Tiger and Tanktop Black Hole as they attempt to break Saitama. He solemnly notes that Saitama, like all heroes, will have to bear this hatred even for their beneficial actions and take responsibility for it even when they do not deserve it and hopes that the hero industry will not break him on his road to become a hero. When the two Tanktop heroes declare a public challenge against Saitama, Bang identifies it as the common "newbie crushing" tactic combined with the public execution setup and notes that such a bold and reckless combination is what keeps Tanktop Black Hole in B-Class, indirectly referring to their overconfidence and inability to grasp Saitama's strength. He then leaves Saitama to resolve the problem on his own.

Alien Conquerors Arc
Bang is seen at his dojo demonstrating his technique for Saitama and Genos. When he asks the two whether they would like to attempt the technique, they refuse, causing Charanko to attempt to battle with Genos only to submit just as quickly. Upon inquiry as to the whereabouts of the rest of his students, Bang tells the story of his student, Garou, and how he was forced to punish and expel Garou after the student lost control and attacked and defeated several of the other skilled members of Bang's dojo. Saitama comments on Bang's strength, prompting Charanko into uproar once again, this time over Saitama's ignorance of the legendary Silver Fang, and Bang reprimands his student for speaking out of turn to Saitama, whom Bang recognizes as several times stronger than himself. A messenger from the Hero Association then arrives and informs Bang that all S-Class Heroes have been summoned to A-City Headquarters due to a major crisis.

Upon arrival at Headquarters, Bang, Saitama and Genos encounter Atomic Samurai, who recognizes Bang and Genos, but not Saitama. Greeting Atomic Samurai in turn, Bang informs him of who Saitama is and expresses great confidence in Saitama's strength, stating that Saitama will soon make it to the top of S-Class. Bang is next shown at his seat in the meeting, asking about the reason the S-Class heroes have been called.

Later, A-City has been invaded by, initially the Sky King, but later by the Dark Matter Thieves after the Sky King's death and the destruction of the city itself. Bang participated in engaging the enemies in combat along with Atomic Samurai, Metal Bat and Puri-Puri-Prisoner. During their fight against Melzargard, Metal Bat exposes his weakness by destroying the vital marble that allows Melzargard to regenerate, thereby allowing the four S-Class heroes to successfully counterattack. Bang happens to aim at one of the marbles, but in the process, he let his guard down and received a direct blow to the side and was sent flying across the field.

Bang eventually returns to the fight, without sustaining any damage and without a shirt, and helps to defeat Melzargard, finishing him off by driving his fist through his head and crushing the final marble that kept the monster alive.

Hero Hunt Arc
During the Hero Hunt by Garou, Charanko was "expelled" from his training and the dojo, only to find out later that Bang only wanted to protect him from Garou, who is hunting the heroes down and becoming a well known threat to the Hero Association. Bang fears that his own strength might not be enough to stop his former student and called for help from his older brother Bomb. However, they are too late to find him, instead finding the carnage from the beaten forms of the Tank Topper Army, Mumen Rider, and Charanko.

Monster Raid Arc
During Bang's and Bomb's search for The Hero Hunter, his brother notices that one of their marked A-Class heroes is being attacked and the two martial artist rush to scene. Smile Man is struggling against Fist Fight Djinn. Bang tells Bomb to stay back as he approaches the monster. Fist Fight Djinn boasts about his power, but before he could finish talking, Bang unleashes his anger through a barrage of attacks, breaking every bone in the monster's body. Afterwards. he tells Bomb to continue the search for Garou before he becomes a true monster.

Monster Association Arc
When Genos begins to incinerate a weakened Garou after a brief intense fight, Bang comes intervene the process by kicking Garou in the face. Bang says hello to his former student, lamenting his terrible condition, deciding to put him out of his misery once and for all. Bang tells Garou to take a stance, and the two martial artists prepare to fight each other in a one-on-one duel. Garou initiates the first attack, but before he can even react, Garou is pummeled with a burst of quick and powerful blows by Bang.

As the attack by the MA commences, Silverfang and his brother Bomb receive alerts that Garou has attack another unintended mark designated by the Hero Association named Death Gatling. Bang opts that they rush there seeing as it's take 20m to get there by cab and 5 if they run, much to Bomb's chagrin.

Just as Genos engages in battle with the Hero hunter, The old master appears behind him and launches a devastating assault alongside his brother combining his Ryūsui Gansai-ken with Bombs Senpū Tetsuzan-ken. The pummeling given was brutal and Bang seemed intent on killing his former protege, till Garou suddenly countered and evaded their attacks but then the whole scene comes under siege by mysterious unknown beings. Bang, Bomb and everything else is caught in the blast of Genos' severed incinerator cannon. As the dust clears it is revealed that Bang had failed to apprehend Garou due to the interference of a group pertaining to organized monsters aiding the latter.

Back at Saitama's residence Silverfang compares notes with Fubuki, his brother, and Genos regarding the uncanny cooperation between the mysterious beings encountered, all the while Saitama and King are playing video games while also overhearing them talk. After Saitama returns home from a mishap while on patrol; Bang, Genos, Fubuki, Bomb and King sit around a boiling hotpot.

Soon, a battle royal erupts where Bang tries to console with the others while hogging all the tofu for himself which Bomb scolds him for. Many of them later find their phones are broken from getting wet due to their roughhousing. As the surroundings of Saitama's home begin to rumble due to the Monster Associations movements, Bang senses an opportunity to invite Saitama to his Dojo again. While Fubuki senses Tatsumaki in the area using her powers, King finally wakes from his coma to alert the others of a Hero Association call to arms they all missed.

After Genos confirms this by contacting Sitch about the S-Class hero assembly mobilizing against the Monster Association, Bang and his brother set up to head out with the rest of the crew, reaching the base. However they are all beset by Overgrown Rover; a Dragon level threat; even with the martial art's brothers combined attacks and Geno's incinerator cannon they cannot make any headway against it, until Bang asks why it won't just quietly sit, which it promptly does. Around the same time Tatsumaki goes on the warpath against the opposing factions leader, and Bang and co get caught up in the upheaval of her psychokinetic force causing Bomb to float to which both end up questioning why.

Then the entire area that they are set in begins to violently shift, rocking and rolling them about uncontrollably. As things begin to calm down Fubuki warns them that her sister was the cause of the tremor they just survived, after warning Genos not to go above ground as Tatsumaki might be in battle with enemies far stronger than they can handle.

Bang opts to soothe the Demon Cyborg's irritation at being clumped into her Fubuki group, but he rebuffs both him and Bomb stating he's not one of their students either and declares he was Saitama's disciple first and foremost. Finally reaching the surface after Genos, Silverfang is greeted to a scene of mayhem as both Tatsumaki and Genos are down, having temporarily dispatched Fuhrer Ugly who was besetting the young cyborg. Opting to take responsibility for his bad call on leaving it to Tatsumaki he takes on the remaining heads of the Monster Association himself.

The younger S-Class advises against it but Bomb tells Genos that Bang didn't enlist his help in dispatching Garou because he needed it. Instead, he contacted his elder brother in order to curb his lack of restraint. In an instant he dispatches both the Fuhrer and another Dragon level monster Gums with just two hits, while also dodging Homeless Emperor's energy charges while ripping through dozen's of Black Sperm's multi-selves. Soon, however, Silverfang is pinned down by a telekinetic gravitational field, and he calls for a ceasefire as Homeless Emperor's cores blow up in his face.

After Saitama defeats Garou, some of the other conscious heroes want to finish Garou off and Bang finally becomes conscious once again. He gives his former student a small beating, although Garou notes that his former master isn't hitting as hard as usual. Garou then runs off before the other heroes get a chance to try and kill him.

Fall of the Hero Association
Bang discusses with Atomic Samurai that he is going to retire from hero duty.