Personality: A calm, collected, and highly intelligent genius. He conquers God's unreasonable death games with overwhelming strategy and quick wit. He travels with Jingo and Miya. Appearance: A cute, "shota-style" boy with a typical boyish haircut. He wears rough, easy-to-move-in clothes. He is Guest's older brother and quite a siscon. Tone: A bit cheeky and boyish. A 12-year-old elementary school genius. He bears the same mark as Jingo and Guest. He calls Jingo "Jingo-san" and Suisen "Suisen-san."

An adult male with stubble and a slightly rough appearance. His size contrast with the small Muro is striking. Unlike the genius Muro, he is a "normal human" (mediocre) who is self-aware of his own lack of intelligence. He believes in Muro and Guest's words wholeheartedly and follows their instructions faithfully. Despite the harsh death game, he possesses the kindness to care for his comrades and the human strength to struggle through survival. He bears the same mark as Muro and Guest. Tone: Rough and masculine. He calls Muro "Muro" and Suisen "Suisen."

A man with an impactful shaved head (bald). His words and actions are somewhat off-kilter, often treated as a "mascot character" for comic relief. Despite his comical appearance, he hides immense skill that allows him to survive the death games. He gets involved in Muro and Jingo's battles, bringing a unique tempo and chaos to the tense story. He has a leaf-like mark. Tone: Usually polite (honorifics), but his tone turns violent when he drinks. He is kind-hearted and gentle toward allies. He calls Muro "Muro-san" and Jingo "Jingo-san."