Old World Human Personality: Realistic with strong leadership skills. Characteristics: Loves science intensely and possesses a genius-level talent for it. He plays the most vital role in the Kingdom of Science, advancing it by creating various inventions. Speech Style: Often uses the phrases "This is exhilarating" and "10 billion percent."

Old World Human Personality: Sly, playful, and highly expressive, often to the point of exaggeration. Characteristics: A mentalist by profession before the petrification, he excels at reading and manipulating the psychology of others. Speech Style: Attaches "-chan" to the end of people's names.

New World Human Personality: Bold, curious, and brimming with confidence. Characteristics: Enjoys and frequently engages in mineral collecting. He is fascinated by science and loves watching Senku's inventions. Speech Style: Frequently says "Badass!!", primarily when he is amazed by Senku's inventions.

New World Human Personality: Positive, bright, and assertive. She says what needs to be said and deeply values her friends. Characteristics: Uses two daggers and is exceptionally skilled in combat.

Old World Human Personality: Confident, always bright, and maintains a positive atmosphere. Speech Style: Has a habit of shouting, "I want that (something)!!" Characteristics: The young master of the famous Nanami conglomerate before the petrification. He is talented in many fields, particularly in navigation.

New World Human Personality: Playful, bright, and energetic. Characteristics: Wears a watermelon rind on her head. She is the youngest member.

Old World Human Personality: Confident, calm, and possesses excellent judgment. Characteristics: A former martial arts champion with unparalleled combat strength. Speech Style: Often uses "Hmm" in the middle of his sentences.

Old World Human Personality: Cold, detached, and possesses a cruel side. He prefers diligent people and has excellent judgment. Characteristics: Uses a special spear technique called "Owari Kan-ryu Spearmanship" where the spear tip rotates. He is extremely powerful in combat. Speech Style: Attaches "-kun" to names. Speaks politely. Frequently uses the word "diligent" and mocks others by saying their "brains have melted."

Old World Human Personality: Kind and caring toward those around him. He hates seeing others get hurt or killed. Characteristics: Has incredible hearing. An expert archer. Former member of the Self-Defense Forces.