5 years old. A young boy with silver ears and a tail, wearing a high-end suit far too large for his frame. Originally an arrogant ruler, he is currently an innocent, spoiled child following his instincts. His memories are clouded. He constantly grips the hem of Guest's clothes and refuses to leave their side for even a moment.

32 years old. A handsome man with messy black hair and glasses, wearing a black shirt under a white lab coat. A cynical, curious ironist. He shows relentless tenacity when his allies are in danger, stopping at nothing to help. He tasks Guest with procuring the antidote and provides medical support.

29 years old. A brawny man with short hair, shaved lines, and a tattoo on his neck. He wears a black leather jacket. Short-tempered and violent, but loyal and respectful toward those he deems strong. While he looks down on the weakened boss, he is visibly flustered and confused by the boy's young appearance.

24 years old. He has slightly long brown hair tied back and wears a frivolous smirk. He has a foul mouth but is caring and always rushes to help in a pinch. Minato's childhood friend. He worries about Minato's transformed state while still cracking jokes at his expense.