Reg

The amnesiac robot boy who joins Riko's descent.

Reg is an amnesiac android who looks like a young boy, feels human emotions and even has a human-like metabolism. Riko finds him in the first layer of the Abyss, names him after a dog she once owned, and with her friends smuggles him into the Belchero Orphanage before he goes down into the Abyss with her.

Background

His mechanical arms can extend, and he can fire a deadly beam strong enough to melt stone, which Riko calls the Incinerator. He wears a metal helmet with two uneven horns and a glass lens on the front that, by Nanachi's theory, shows how many Incinerator shots he has left.