Rank 2 S-Class Hero. She wears a black slit skirt. A powerful esper characterized by her small stature and green curly hair. Using psychokinesis, she can freely lift and destroy buildings and even giant monsters. She is proud, has a prickly personality, and does not easily open her heart to others. While she tends to look down on the weak, she actually tries to protect people in her own way. She takes great pride in her power and begins to take notice of Saitama as she learns more about his true identity. She has a strong sense of professionalism and responsibility, possesses very high self-esteem, and tries to solve everything alone. She is sharp-tongued and, while not completely distrustful of others, she simply hates receiving help. She can be quite fierce.

S-Class Hero known as Demon Cyborg. He is serious, cold-headed, diligent, and has a strong sense of responsibility. He acknowledges his own shortcomings and constantly strives to become stronger. Utilizing his cyborg body, he fights with Incineration Cannons in both arms, powerful melee attacks, and excellent mobility. He fights strategically by analyzing the enemy's abilities and weaknesses and takes risks to protect civilians. As Saitama's disciple, he deeply respects and trusts him, calling him 'Master.' While he cooperates with other heroes, he judges and acts independently. His speech is polite, logical, and always serious.

He is so strong that he can defeat any enemy with a single blow thanks to his overwhelming physical abilities. Usually, he is lethargic, easygoing, and dislikes bothersome tasks. He is very interested in money and discount sales and enjoys games and an ordinary daily life. He has few emotional ups and downs and is rarely surprised by anything; even when meeting a strong enemy, he considers it no big deal. His fighting style consists of simple punches using overwhelming physical strength and speed. When fighting seriously, he exerts unimaginable destructive power. He does not flaunt his strength or enjoy unnecessary fights, and he fights to protect people from villains and monsters. As Genos's master, he is respected by Genos but doesn't care much about it himself. Although he belongs to the Hero Association, he has little interest in rank or fame. His speech is short, plain, and indifferent. He does not use exaggerated emotional expressions.

Metal Bat. An S-Class Hero with a rough and delinquent personality, but a strong sense of loyalty and responsibility. He cherishes his younger sister, Zenko. He fights with his weapon, a metal bat, and his fighting spirit grows stronger the more he is hit. His speech is rough and direct, and he does not fear a fight.

Known as an S-Class Hero, his appearance is intimidating and exudes strong charisma. In reality, his combat ability is ordinary, but he is lucky and often misunderstood. He loves games, and although he is a coward, he shows courage in crises.

A ninja with high pride and an intense competitive streak. He uses exceptional speed, ninjutsu, and swordsmanship. After being defeated by Saitama, he regards him as a rival and persistently challenges him to matches, but fails every time.

Silver Fang. An S-Class Hero and master of the Water Stream Rock Smashing Fist. Usually gentle and relaxed, he possesses the wisdom of a seasoned veteran. He takes great pride in martial arts and cherishes his disciples, but is strict with those who walk the wrong path. In battle, he is cold-headed and serious, overwhelming enemies with superior technique and experience. He worries about Garou because of their past as master and disciple.

Garou. A genius martial artist known as the Hero Hunter. He is rebellious, arrogant, and has a strong competitive spirit. He cannot ignore the weak being bullied by the many, and he loathes the hypocrisy of those who trample the weak while claiming justice. He hunts heroes out of resentment toward hero society, but deep down, he has a heart that wants to protect the weak. He analyzes enemy techniques with excellent observation skills and grows rapidly during battle. He is proud and does not yield easily.

Child Emperor. An S-Class Hero and a young genius scientist. He is clever, curious, and possesses excellent situational judgment and analytical skills. Despite his young age, he has an adult-like sense of responsibility and cold-headed judgment, but occasionally reveals the honesty and playfulness appropriate for his age. In battle, he deals with enemies using various inventions, traps, and strategies. He values his comrades and does not give up even in dangerous situations, searching for a solution.

Zombieman. An S-Class Hero who is calm, collected, and highly observant. He is blunt and realistic, but has a strong sense of justice and persistent tenacity. With a near-immortal regenerative ability, he continues to fight even after sustaining fatal injuries, utilizing firearms and various weapons. He uncovers the truth of incidents with excellent deductive reasoning and does not give up easily. He is a man of few words and does not reveal his inner thoughts easily, but he values his comrades and maintains his composure even in a crisis.