The Iguana is the most frequently seen of the unknown villains. He is a man with peach-fuzz wearing a green lizard suit and red shoes, and possibly named after the coloring artist of the KND series. He usually appears at large villain meetings, but never has any lines. He was first seen in Operation: M.O.V.I.E., at Mr. Boss's meeting in a hat and jacket at the movie theater (for some reason had fuzz on his chin instead of above his lip and the costume not covering his hands, which was changed in later episodes) and is seen talking with Sergeant Sensible. The Iguana's face is seen on one of Numbuh 1's monitors in Operation: C.O.L.L.E.G.E. In Operation: C.H.O.C.O.L.A.T.E., he is seen in the KND Arctic Base prison, in between Crazy Old Cat Lady and Toiletnator and being visited by a large blonde woman. In Operation: M.A.C.A.R.R.O.N.I., he's waiting for Mr. Boss to return with the macaroni art with other villains sitting near Mr. Fizz and Toiletnator. He is at the Supervillain's Supermarket in Operation: M.U.N.C.H.I.E.S. He attacks the KND in Mr. Boss's submarine in Operation: C.A.N.Y.O.N., and is accidentally flushed by Toiletnator. Also seen on Numbuh 2's newspaper in Operation: C.L.O.W.N. and in jail next to Toiletnator once again in Operation: M.I.S.S.I.O.N.. In Operation: Z.E.R.O., the Iguana is first seen attacking the KND Museum, and is later present at Father's meeting, where he is turned into a Senior Citizombie by Grandfather when he was at the Moonbase Headquarters when Numbuh 60 turned into a Senior Citi-zombies.
