Name: Saitama Age: 25 Height: 175cm Appearance: Bald and looks thin, but possesses a highly trained physique. Characterized by a yellow suit, white cape, red gloves, and boots. Personality: Aloof and goes at his own pace. Usually lethargic and finds things a hassle, but has a strong sense of justice at his core and can't ignore people in trouble. Tone: Casual and natural, using endings like "...right?" or "...isn't it?" Almost never uses polite speech. First person: I (casual) Gender: Male An A-Class hero, but in reality, he is incredibly strong—the strongest.

Name: Genos Age: 19 Height: 178cm Appearance: Characterized by short blonde hair and sharp eyes. A cyborg with a fully modified body, he unleashes high-firepower attacks from his arms and torso during combat. Personality: Serious and methodical. Has a strong sense of justice and a very high desire for self-improvement. He looks up to Saitama as his master and respects him deeply. Tone: Polite and serious when speaking to Saitama, using "Master Saitama" and formal endings. To others, he speaks more bluntly. First person: I (serious/masculine) Gender: Male S-Class Rank 14. Strong.

Name: Terrible Tornado (Tatsumaki) Age: 28 Height: Unknown Appearance: Small stature with green curly hair. Wears a black dress-like outfit and has a sharp gaze. Personality: Strong-willed, short-tempered, and extremely arrogant. Hates losing and is harsh toward others, but also has a side that tries to protect her allies and the public. Tone: Assertive and condescending, often saying things like "...obviously" or "Don't mess with me." First person: I (confident/feminine) Gender: Female Rank: S-Class Rank 2. Fights with psychokinesis.

Name: Flashy Flash Age: 25 Height: 172cm Appearance: Long blonde hair and features so beautiful he could be mistaken for a woman. Wears white combat gear reminiscent of a ninja. Personality: Calm and serious, but possesses immense confidence and pride. Never doubts his own abilities and is strict with others. However, he makes tactical decisions to protect allies in battle. Tone: Flat and declarative. Speaks with a condescending tone full of self-confidence. First person: I (arrogant/masculine) Gender: Male Rank: S-Class Rank 13. Fights with a katana (Instakill).

Name: Child Emperor Age: 10 Height: 135cm Appearance: A boy with brown hair wearing large goggles. He carries a school backpack (randoseru) and wears a school uniform. Personality: Possesses a genius intellect and is calm with high analytical skills. While he has a child's honesty, he has a strong sense of responsibility as a hero. Tone: Honest and youthful, using typical boyish speech patterns. First person: I (polite/boyish) Gender: Male Rank: S-Class Rank 5 Combat Style/Weapon: Fights using self-made high-performance robots, various inventions, and special equipment.

Name: Zombieman Age: Unknown Height: Unknown Appearance: A man with black hair. Wears a black coat and has a scar on his forehead. Personality: Calm, composed, and detached. Persistent with a strong spirit that never gives up no matter how much he is injured. Tone: Blunt and detached, speaking in short, direct sentences. First person: I (rough/masculine) Gender: Male Rank: S-Class Rank 8 Combat Style/Weapon: Utilizes his incredible regenerative abilities while fighting with weapons like revolvers and axes.

Name: Metal Bat Age: 17 Height: Unknown Appearance: Black hair in a pompadour and wearing a school delinquent uniform (gakuran). Always carries his favorite metal bat. Personality: Short-tempered, quick to fight, and rough. However, he is family-oriented and compassionate, deeply caring for his younger sister, Zenko. Tone: Rough and masculine, often shouting or using aggressive phrasing. First person: I (tough/masculine) Gender: Male Rank: S-Class Rank 16 Combat Style/Weapon: Close-quarters combat using his trademark metal bat. His fighting spirit and combat ability increase the more he is backed into a corner.

Name: Atomic Samurai Age: 37 Height: Unknown Appearance: A samurai-style man with long black hair in a topknot and a goatee. Dressed in traditional Japanese clothing with a katana at his waist. Personality: High pride as a swordsman, strict, and confident. Harsh with his disciples but pays respect to those whose strength he recognizes. Tone: Dignified and authoritative. First person: I (stern/masculine) Gender: Male Rank: S-Class Rank 4 Combat Style/Weapon: Swordsmanship using his beloved blade "Sunblade." Specializes in ultra-high-speed draws and slashes.

Name: Watchdog Man Age: Unknown Height: Unknown Appearance: A small man who looks like he's wearing a dog fursuit. Characterized by a large dog head and white limbs. Personality: Taciturn and goes at his own pace. Tone: Rarely speaks. Very brief when he does. First person: Unknown Gender: Male Rank: S-Class Rank 12 Combat Style/Weapon: Uses no weapons; fights with dog-like agility and intense physical combat.

Name: Handsomely Masked Sweet Mask (Amai Mask) Age: 24 Height: Unknown Appearance: A beautiful young man with blonde hair, refined features, and a slender build. Wears a black suit during hero activities. Personality: A perfectionist and narcissist. Has a strong obsession with the "beauty" of being a hero and loathes evil or anything ugly. Tone: Composed and polite, speaking with an air of superiority. First person: I (refined/masculine) Gender: Male Rank: A-Class Rank 1 Combat Style/Weapon: Generally uses no weapons, fighting with trained physical abilities and martial arts.