|— Spring Mustachio|
Spring Mustachio is a lean-built man with short black hair combed to the left side with curled sideburns, yellow eyes with several wrinkles on the bottom of his face and a thick handlebar mustache. He wears a dark green suit and pants with a white collared shirt and red bow tie.
Spring Mustachio is an intelligent, serious man who doesn't back down, as shown by his persistence in fighting Kombu Infinity, even after being beaten up rather badly. He also shares a bond with fellow A-Class hero Golden Ball, as they regularly pair up to hunt monsters and share drinks in their spare time.
Spring Mustachio is content to stay in the lower ranks of the A-Class.
At some point in the past he trained under Nichirin and became one of his top disciples from his Conglomerate school. He comes from a very rich family and instead of taking on his parents' job as a company manager, he chose to become a hero and a dishwasher outside of his hero job.
Spring Mustachio and Golden Ball head to the outskirts of Z-City to investigate reports of a rumored monster. They encounter Kombu Infinity. Golden Ball attacks first, but the monster easily repels his attack and incapacitates him. Spring Mustachio and Kombu Infinity then engage in a fight. After seeing the monster dodge his Tomboy attack, Spring Mustachio disengages and questions the monster while requesting backup. Despite putting up a good fight, Spring Mustachio loses and is taken to the hospital. Some time after the event, he received a promotion to rank 28.
After realizing that Golden Ball was absent for their usual drink, Spring Mustachio goes to his aid in his fight against Garou. Spring Mustachio slices erratically in the narrow alleyway, forcing Garou to jump. Spring Mustachio then initiates his secret move, Tomboy. Garou dodges the attack and grabs the guard of the sword even though the sword stabbed through his hand. Succeeding the dodge, Garou punches Spring Mustachio, knocking Spring Mustachio into a pile of trash cans and crates. Garou says that he already knew about Spring Mustachio's secret technique, and that the fight helped him adapt to armed combatants.
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Appearances in Other Media
Spring Mustachio was among the many heroes summoned by McCoy to combat the monster that was devastating the Z-City police station. He arrives at the scene late, after Saitama has already killed the monster.
The Hero Association dispatches Spring Mustachio and a group of heroes to defeat Vaccine Man. However, the monster is too strong for them. After Saitama kills the monster, King appears at the scene to retrieve his video game, and the heroes mistake him to be the hero who took down the monster.
Spring Mustachio is a playable character in the video game, One Punch Man: A Hero Nobody Knows.
Abilities and Powers
As an A-Class heroes, Spring Mustachio is a skilled and powerful fighter. His master Nichirin notes that Spring Mustachio is a gifted swordsman. His skill in close-range combat pairs well with his partner Golden Ball's propensity for long-range attacks.
Spring Mustachio is revealed to have extremely high penetration power with his sword, which is attributed to his contentedness in staying in the lower ranks. Nichirin, Spring Mustachio's master, has stated that his penetration power is such that he does not utilise it in crowds.
Enhanced Speed: Spring Mustachio was able to pass a block with a few leaps. He also managed to dodge some of Kombu Infinity's tentacles. His speed was great enough that Garou was forced to dodge by jumping upwards in order to avoid Spring Mustachio's rapid slices.
Enhanced Strength: Spring Mustachio can easily slash through concrete and metal.
Expert Swordsman: One of the top fencers and pupils of Master Nichirin, Spring Mustachio has an incredible aptitude in swordsmanship, especially in the use of a foil. He has been shown to be able to parry at a rapid pace, blocking several attacks almost at once.
- Salute: A fencing stance used at the beginning of a duel to greet an opponent. Spring Mustachio uses it as a stance from which he launches attacks.
- Tomboy (踏無暴威, Tomubōi): One of his secret attacks of fencing is the thrust, which begins with his foil coiling in on its self like a spring and then thrusting it forward while shouting "Et La" (or possibly Étoilé, which in french literally means star). The resulting thrust extends far past the reach of his foil and has been shown to be able to punch through a telephone pole quite a way away.
- Tomboy Barrage (踏無暴雨威, Tomubōi): One of his secret attacks of fencing is a series of thrusts, which begins with his foil coiling in on its self like a spring and then thrusting it forward. The penetrating power of his technique is described to be too great, so he can't attack horizontally in populated areas.
|Spring Mustachio and Golden Ball vs. Kombu Infinity||20||6||Loss|
|Spring Mustachio and Golden Ball vs. Garou||50||15||Loss|
|Heroes vs. Monster Association Executives||139, 143, 144, 145, 146, 147, 148, 149, 150, 151, 152, 153, 154||None||Interrupted by Garou|
- Spring Mustachio's hero profile number is 00624.
- He runs a cafe as a side business.
- He likes coffee, wine, and antique furniture.
- He also likes doing close up magic tricks.
- Lately he is feeling repulsion towards seaweed.
- Spring Mustachio sketch.