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 in the Continuums with Numbuh 42, pretending to be kidnapped by the KND Splinter Cell. She is voiced by Hynden Welch.