A young mercenary who wears a mechanical prosthetic in place of his lost right arm. Five years ago, Argi lost his family as well as his right arm during an attack by a Gundam Frame, and he became a mercenary to seek revenge. He visited Ted Morugaton after being asked to assassinate the man, but he ends up getting attacked by the Triaina, piloted by another assassin. Under Ted's orders, he piloted the Gundam Astaroth entrusted to him by Volco Warren and engages the enemy assassin. To repay Ted for sacrificing his life to protect him, Argi officially becomes the pilot of the Astaroth to gain the strength he needs to exact vengeance against the Gundam. Argi has a strong sense of responsibility, but is alsoblunt and terrible with women. Although he has not undergone the Alaya-Vijnana System surgery, he can connect the nerves of his prosthetic to his Mobile Suit to take advantage of higher reaction speed while piloting.