Ruthless assassin known as "The Exterminator". Earl Kibbee is hired by KAOS agent Karl Vogel to eliminate the informer Wolfgang Dietrich who has been taken into hiding in the apartment of CONTROL agents Maxwell Smart and 99 disguised as Mrs. Feldman, the woman employed to help take care of the Smarts' twin babies. This charade proves no barrier to the Exterminator who soon locates him there. Kibbee is apprehended in the garage of the apartment building when a chunk of ceiling plaster dislodged by submachine-gun fire lands on his head and knocks him out.