Numbuh 59 is a male KND prisoner transport pilot who piloted Prison Transport Delta and was tasked with bringing Numbuh 206 to the Moonbase to be decommissioned, along with Numbuh 58. When Numbuh 206 escaped, Numbuh 86, who considers boys inferior by default, blamed him and not Numbuh 58 because he is male. Numbuh 59 and Numbuh 58 appeared in Operation: F.U.G.I.T.I.V.E., Operation: C.A.N.Y.O.N., and Operation: G.R.A.D.U.A.T.E.S.