Reg

Reg is an amnesiac robot-like boy and Riko's companion in Made in Abyss. He travels downward through the Abyss seeking the truth of his origin while protecting Riko from its creatures and curses.

Reg's role and development in Made in Abyss

Reg is gentle, anxious, loyal, and emotionally expressive despite uncertainty over whether he is human. His body has immense durability, extending arms, enhanced senses, and the Incinerator, a devastating weapon that leaves him exhausted.

Reg's abilities and defining relationships

Riko gives him his name, while Nanachi and Faputa reveal connections to his forgotten past. Every recovered fragment raises questions about his mission, previous relationships, and the cost of using his power.