Saitama

Biodata

Feature	Information
Name	Saitama (埼玉)
Alias(es)	Caped Baldy; Bald Cape; “hero for fun” 267 336 351
Species/Race	Human
Gender	Male
Affiliation	Hero Association
Occupation/Role	Professional hero; self-described “hero for fun” 267 316
Status	Active
First Appearance	Chapter 267

Power Progression

Stage / Realm / Level	Chapter	Notes
C-Class Hero	276	His Hero Association report lists a total score of 71 and a large “C,” despite his exceptional physical ability.
B-Class Hero	292	Identified as a B-Class hero during the emergency assembly for Boros’s invasion.
A-Class Hero	317	Garou identifies him as a professional A-Class hero.
A-Class, Rank 39 → Rank 35	326	Considered for S-Class promotion, but limited recognition of his actions results in a formal promotion only from A-Class Rank 39 to Rank 35.

Background

Saitama became a hero after pursuing strength through a simple daily regimen: 100 push-ups, 100 sit-ups, 100 squats, and a ten-kilometer run, all without air conditioning. He reportedly trained this way for three years; his hair gradually fell out as his power increased. Genos’s later research concludes that Saitama repeatedly surpassed his limits after nearly dying against a Wolf-level monster early in his career. 273 298

By the time he meets Uchiha Meikyō, Saitama is already strong enough to defeat Dragon-level threats with a single punch, yet remains financially strained and largely unknown to the public. Meikyō pays for their first shared meal, beginning their friendship. 267 268

Appearance

Saitama is a bald man with an intentionally plain appearance that causes others to routinely underestimate him.

• Bald head, often described as reflective or polished-looking. 273
• Usually wears a yellow hero uniform with red gloves and a red cape. 320 424
• His ordinary appearance contributes to the Hero Association’s failure to properly recognize his strength. 326

Personality

Saitama is relaxed, blunt, and easily distracted by ordinary concerns such as food, sales, games, manga, and damaged furniture. He finds most battles boring because opponents cannot survive his punches, but becomes visibly excited when faced with an enemy capable of enduring his strength. 268 273 317 424

Despite calling himself a hero “for fun,” he takes civilian safety seriously when prompted and is unwilling to kill a human opponent. He stops Garou with a restrained attack rather than execute him after Garou returns to human form. 268 360

He dislikes being addressed by his official hero name, repeatedly asking others to simply call him “Saitama.” 336

Abilities & Skills

Overwhelming Physical Strength

Saitama can defeat monsters and superhuman opponents with casual punches, including Dragon-level threats that overwhelm other S-Class heroes.

• Instantly defeats Vaccine Man, Giant Brother, Carnage Kabuto, Goketsu, Bakuzan, and Garou. 267 268 273 315 360
• Shatters an incoming meteorite over Z-City with a single leap and strike. 280
• Blasts Boros through his spaceship with a casual punch, then ends their battle with a Serious Punch. 294 295
• Can deliberately restrain his strength enough to merely knock Garou unconscious. 317

Serious Punch

Saitama’s Serious Punch is a stronger attack used when ordinary strikes are insufficient.

• Destroys Giant Brother’s head instantly. 268
• Overpowers Boros’s Roaring Star Cannon, causing devastation on a planetary scale. 295
• Splits the Earth during his confrontation with Garou. 360
• In his spar with Meikyō, repeated Serious Punches fracture portions of the Kuiper Belt. 422

Limit-Breaking Growth

Saitama’s strength is associated with having broken his limiter through repeated extreme training and life-threatening combat.

• Genos’s research traces his rapid growth to repeatedly surpassing his limits after nearly dying against a Wolf-level monster. 298
• Meikyō concludes that Saitama has broken both his physical limiter and the limits of his mind and will. 422
• His power increases further during difficult battles, allowing him to face opponents capable of surviving his earlier attacks. 422 424

Cosmic Survival and Mobility

Saitama functions in environments that ordinary humans cannot survive.

• Travels from the Moon to Mercury by jumping through space. 335
• Survives and speaks in the vacuum of space, surprising Blast and his team. 423
• Fights a universe-eating entity in hyperspace alongside Meikyō and Garou. 424

Reality-Defying Combat Potential

Meikyō’s observation of Saitama identifies his power as an extreme manifestation of the rule of strength, influenced by Saitama’s mindset.

• Meikyō believes Saitama’s conviction can distort reality, time, and space at sufficient levels of power. 422
• Saitama’s raw force can break through attacks and energy systems normally governed by cosmic rules. 424
• His strength is described as existing between the peak of a single universe and the multiversal level. 422 423

Equipment

• Hero uniform — Yellow suit, red gloves, and red cape. 320 424
• Hero Association communicator — Receives emergency alerts and deployment notices. 358

Relationships

• Uchiha Meikyō — Friend, training partner, and frequent ally. They meet after Vaccine Man’s defeat, share meals, train on the Moon, spar in the Kuiper Belt, and fight the hyperspace God together. 267 334 422 424
• Genos — Fellow hero who addresses Saitama as “Teacher” and obsessively studies his strength and training history. 273 276 298
• King — Gaming companion and Monster Association partner. Saitama repeatedly protects King during dangerous situations, including a fall from a helicopter. 317 318 360
• Garou — Initially an opponent whom Saitama casually knocks unconscious; later becomes a cosmic ally against the hyperspace God. Saitama refuses to kill him after he returns to human form. 317 360 424
• Bang — Martial-arts master who attempts to recruit Saitama as a disciple; Saitama declines because he sees little value in techniques for himself. 292
• Blast — High-ranking hero who is surprised by Saitama’s ability to survive in space and recognizes his importance against divine threats. 360 423

Story Role / Major Arcs

Arrival and House of Evolution

Saitama defeats Vaccine Man with one punch, meets Meikyō, and joins him for dinner. He later eliminates Giant Brother and Carnage Kabuto, enabling Meikyō to pursue cooperation with Dr. Genos and the House of Evolution’s genetic technology. 267 268 273

Hero Association Assessment

Saitama takes the Hero Association examination alongside Meikyō and Genos. Although his physical performance is extraordinary, his poor written score results in a C-Class placement rather than immediate S-Class recognition. 275 276

Boros Invasion

During Boros’s assault on A-City, Saitama arrives late after getting lost on the alien ship. He defeats Boros after allowing the cosmic overlord to demonstrate his strength, finally using a Serious Punch to end the battle. 294 295

Monster Association and Garou

Saitama teams with King during the Monster Association operation, becomes separated through a black cube’s dimensional effect, and later defeats Garou while refusing to kill him once he becomes human again. 318 321 360

Cosmic Training and the Hyperspace God

Meikyō recruits Saitama to help develop new techniques, leading to training on the Moon and observation of a solar storm from Mercury. Later, Saitama spars with Meikyō in the Kuiper Belt before joining Meikyō and Garou against a universe-eating God in hyperspace. 334 335 422 424

Notable Quotes

“Oh, I’m Saitama, a hero for fun.” 267

“I really can’t bring myself to attack humans after all.” 360

“You mean... this time I can finally let loose, fight with all my might, and fight without restraint?” 424

Trivia

• Saitama’s physical-test performance broke multiple Hero Association records, but his written score caused his initial C-Class placement. 295
• He is capable of defeating cosmic threats but cannot catch a mosquito when he believes he cannot. 271 422
• He is motivated to assist Meikyō’s training when Meikyō threatens to cancel a barbecue party. 334