Saitama

Biodata

Power Progression

Background / History

Saitama lives in Z City’s deserted district, where unusually frequent monster activity has driven away most residents. Before Baicang purchases his apartment, he is two months behind on rent and worries that a visitor might have come to collect payment 9.

Baicang initially searches for Saitama because he already knows about his overwhelming strength. Unable to find information about Caped Baldy online, he searches Z City but is ambushed by the Pig-Headed Monster before locating him 2.

Appearance

Saitama is bald and outwardly unremarkable, despite his extraordinary strength 4 20.

• Smooth, gleaming head: Frequently draws comments from Baicang and insults from Runo 9 20.
• Yellow combat suit: Worn during his first encounter with Baicang 4.
• Red gloves: Baicang remains wary of them even when Saitama is only joking around 46.

Personality

Saitama dislikes troublesome responsibilities and initially considers himself unqualified to teach anyone. He reluctantly accepts Baicang, then tries to divert Genos’s request for instruction to his existing disciple. By the time Baicang brings Genos to his apartment, Saitama largely treats Baicang as a friend rather than a student requiring supervision 4 9 39 46.

His overwhelming strength leaves him bored by uneventful days. He hopes Carnage Kabuto can restore the thrill of a genuine fight, while admitting that defeating the colossal giant left him feeling little 9 26 50.

Food and bargains readily capture his attention: double supermarket discounts persuade him to accompany Baicang, and he orders deluxe seafood ramen as soon as he learns Baicang is paying. Nevertheless, he also shows consideration, returning to Baicang’s home because leaving abruptly would be rude and becoming serious after Carnage Kabuto injures Genos 4 26 38 49.

Abilities & Skills

Overwhelming Physical Strength

• Kills the Pig-Headed Monster with a light punch, destroying its body in midair 4.
• Defeats the colossal giant with a single ordinary punch; Baicang identifies the disaster as Dragon-level 21.
• Punches the ceiling-breaking mantis monster into pulp and kills Beast King in one hit 46 47.
• Tears open a heavy underground door as easily as opening a soda can 48.
• Destroys Carnage Kabuto with one punch after the monster enters Asura Mode 50.

Speed, Endurance & Mobility

• Leaves through Baicang’s balcony window before Baicang notices his departure following an emergency bulletin 20.
• Crosses mountainous terrain without visible fatigue and jumps higher than the mountains when obstacles block his route 48.
• Immediately follows Carnage Kabuto when the monster rushes toward a separate combat laboratory 49.

Training Instruction

• Teaches Baicang a daily regimen of 100 push-ups, 100 sit-ups, 100 squats, and a ten-kilometer run 9.
• Emphasizes persistence and tells Baicang not to expect immediate results 9.
• His instruction indirectly reaches Mizuki when Baicang uses the same routine to train her 15 16.

Video Gaming

• Regularly plays video games with Baicang and wins more often than he loses 9 16.
• Celebrates his victories with smug looks that irritate Baicang 16.

Equipment / Weapons / Items

• Combat outfit: Its resistance to damage across numerous monster fights prompts Baicang to seek out its maker for an outfit of his own 35.
• Apartment: Baicang gives him the deed as a gift honoring their prospective teacher–disciple relationship. Saitama treasures the property and demands compensation when House of Evolution monsters damage it 9 47.

Relationships

• Baicang — First and eldest disciple, as well as a gaming companion and friend. Baicang secures his reluctant acceptance through an apartment gift, an appeal to protect Runo, and a meal; their later interactions include frequent teasing and arguments 9 16 39 46.
• Genos — Aspiring disciple whom Saitama saves during the mosquito-monster incident. Saitama makes Baicang’s approval a condition for consideration, but remains reluctant to take another student. He shows concern when Genos is injured and entrusts his care to Baicang 39 46 49 50.
• Runo — His disciple’s younger sister. She experiences overwhelming fear at their first meeting and tries to keep him away from Baicang; seeing Baicang scold him over hygiene later makes her reconsider how frightening he is 19 20 26.
• Dr. Genus — Adversary who orders Carnage Kabuto to capture him, dead or alive. Saitama’s victory directly challenges Genus’s confidence in artificial evolution 48 49 50.

Story Role / Major Arcs

Meeting Baicang

Saitama interrupts the Pig-Headed Monster’s attack on Baicang and kills it before initially mistaking it for Baicang’s friend. Baicang keeps him from leaving by offering double supermarket discounts, then obtains his contact information while seeking mentorship 4 5.

During a later visit, Baicang presents the apartment deed and again appeals to his desire to protect his sister. Saitama accepts him reluctantly and shares his training routine over lunch 9.

The Giant Disaster

An emergency broadcast interrupts Saitama’s hot-pot visit to Baicang’s home. He leaves immediately, defeats the giant, and returns to wait for Baicang. While waiting, he competes with Runo for the remaining meat, reads manga, and watches anime; afterward, he confirms that the fight produced no particular feeling 20 21 26.

House of Evolution

After Baicang brings Genos to Saitama’s apartment, House of Evolution monsters attack the building. Saitama eliminates the mantis monster and Beast King, then accompanies Baicang and Genos to the organization’s base to prevent further attacks 46 47 48.

Carnage Kabuto injures Genos, prompting Saitama to take the confrontation seriously. He allows Baicang to test a new ability first, but finishes the monster himself after learning that the supermarket sale is happening that day and closing time is approaching. Dr. Genus watches his strongest creation explode from a single punch 49 50.

Notable Quotes

“There’s no need to rush. It took me three years to reach where I am now, too.” 9

“Damn it! Sum it up in twenty words or less!” 46

“You’re paying for that ceiling!” 46