Numbuh Rebecca appeared in Operation: A.M.I.S.H.. She is a member of Sector A, along with Numbuh Ezekiel and Numbuh Jebadiah. She was one of the "scientists" who were secretly watching Doctor Time Space and the Continuums with Numbuh 42, pretending to be kidnapped by the KND Splinter Cell. She does not want the rest of her sector to know about this, because they are against that kind of technology. She is voiced by Hynden Walch.