An android created by Dr. Cranken for Gedow from all the combat data collected from Joe and Silvia's fights. She initially appears shortly after Frost Tiger falls, disguised as Silvia, allowing her to steal Joe's rainbow oscars. As she battles Joe and Silvia, she transforms into other members of Gedow, but is unable to win. Joe tells her that she has no heart, and Rachel begins to question her existence, ultimately leading her to suffer a mental breakdown. She eventually learns what it means to fight with heart, but Dr. Cranken attempts to destroy his failed creation, though she is easily repaired.
Rachel also appears in Red Hot Rumble as a playable character.