Kang and Kodos

Kang and Kodos Johnson are a duo of fictional recurring characters in the animated television series The Simpsons. Kang is voiced by Harry Shearer and Kodos is voiced by Dan Castellaneta. They are green, perpetually drooling, octopus-like aliens from the fictional planet Rigel VII and appear almost exclusively in the "Treehouse of Horror" episodes. The duo has appeared in at least one segment of all thirty-six Treehouse of Horror episodes. Sometimes, their appearance is the focus of a plot. Other times, it is 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. There is one episode where they do not make a physical appearance and that is “XXV” of “Treehouse of Horror”. Though their voices are heard in the opening segment, they don’t actually show themselves. Later in the season, in the opening segment of “Blazed and Confused” they are shown having an argument of missing Halloween cause of one of them doing their makeup, jokingly saying they didn’t show up in that Treehouse of Horror episode.

The duo first appeared in season two's "Treehouse of Horror". The first drawing of Kang and Kodos came from writers Jay Kogen and Wallace Wolodarsky. The finished design was based on an EC Comics issue cover. Kang and Kodos had brief cameo appearances in several non-"Treehouse of Horror" episodes and have appeared as villains in several of The Simpsons video games.