Aldo

Aldo is anxious, cautious, and considerably more humanized than his two brothers. After killing Japanese hunters during their ambush, he vomits, revealing that murder affects him far more strongly than his siblings admit.

He lacks their absolute confidence in the claim that the brothers are immortal. This hesitation frequently makes him the most careful member of the group.

Aldo is nevertheless still a professional assassin. Once separated from his brothers, he continues trying to complete the mission through disguise, firearms, and opportunistic attacks.

Aldo has a contract with the Skin Devil. By touching a corpse, he can change his appearance to match the dead person's body.

He is an experienced gunman and uses firearms accurately under pressure. He can also maintain an assumed identity convincingly enough to deceive acquaintances who only know the victim casually.

Aldo is unusually durable for an ordinary human. He survives being hurled from a building by Quanxi and later remains mobile despite the impact.

Aldo and his two brothers ambush Yuutarou Kurose, Michiko Tendou, and Subaru while the Japanese hunters travel toward Tokyo.

The eldest brother copies Kurose, allowing the group to infiltrate Public Safety's orbit. Their plan deteriorates rapidly once they encounter Power and Quanxi.

Aldo survives after both brothers are killed and assumes Kurose's appearance himself. He attempts to continue the assassination mission but becomes increasingly unstable while studying Kurose's personal life and memories.

When Santa Claus's dolls spread through the city, Aldo pretends to have been mentally affected by Cosmo's "Halloween" ability, blending into a crowd and escaping the conflict.

Joey is Aldo's brother and fellow American assassin.

Eldest Brother leads Aldo and Joey during their mission in Japan and repeatedly insists that the three brothers cannot die.

Yuutarou Kurose becomes the identity Aldo eventually assumes using the Skin Devil.

Quanxi overwhelms Aldo physically and nearly ends his participation in the mission.

Long fights Aldo after he fires on Quanxi's group.

Denji is the target the American government sends Aldo and his brothers to capture.