Reg

Reg is a robotic being who resembles a young boy, but his real age, origin and even original name are unknown because he remembers nothing from before meeting Riko. His apparently artificial body may make him completely immune to the Curse of the Abyss, earning him the name "Treasure of the Deep." Extremely durable yet agile, Reg can extend his arms up to 40 meters and carries a powerful incinerator built into his hands and feet.

Despite his combat ability, Reg is shy, naive and easily distressed. When Riko is threatened, however, he becomes fierce and readily fights to protect her.