serious and aloof. Code-named "δ", an experimental body was originally from a Valkyrie named Delta, who was seriously injured in the battle. Because of her strong desire to survive and the will to destroy the Houkai, she was allowed to participate in the Artificial Herrscher project. After observing for a period of time, according to the degree of fit between Delta and the experiment, the research department decided to create the experimental body "δ" as a secret weapon for Honkai.