Wallabee Beetles (sometimes referred to as Wally Beatles) aka Numbuh 4, is a martial artist and hand-to-hand combat expert on the series Codename: Kids Next Door.
Episode 1 - Operation: C.A.K.E.D.
Episode 2a - Operation: I.-S.C.R.E.A.M.
Episode 2b - Operation: C.A.N.N.O.N.
Episode 4a - Operation: M.O.V.I.E.
Episode 3b - Operation: R.O.B.B.E.R.S.
Episode 10a - Operation H.U.G.S.