Also known as: S21
YoRHa Scanner No.21, YoRHa android who partook in the Fourteenth Machine War, appears in the YoRHa stage play, the YoRHa 1.05 novella written by Eishima Jun, the Manga series YoRHa: Pearl Harbor Descent Record, and most recently the NieR: Automata Ver1.1a anime by A-1 Pictures.
Depiction varies across various media.