Kang & Kodos, The Simpsons
Voiced by Harry Shearer and Dan Castellaneta, Kang and Kodos are aliens from the fictional planet Rigel VII and appear almost exclusively in the "Treehouse of Horror" episodes of The Simpsons. The duo has appeared in at least one segment of all twenty-one Treehouse of Horror episodes. Sometimes their appearance is the focus of a plot, other times a brief cameo. Kang and Kodos are often bent on the conquest of Earth and are usually seen working on sinister plans to invade and subjugate humanity. They speak the Rigellian language, which, by coincidence, is identical to English. In 1996, Kang and Kodos impersonated Bill Clinton and Bob Dole and ran against each other in the 1996 election. At first, the Americans declared to vote for a third party candidate, but Kang convinced them that the option would be a waste of a vote. As a result, Kang was elected president.