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 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-four 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.

Harry Julius Shearer is an American actor, comedian, musician, radio host, writer, and producer. Born in Los Angeles, California, Shearer began his career as a child actor. From 1969 to 1976, Shearer was a member of The Credibility Gap, a radio comedy group. Following the breakup of the group, Shearer co-wrote the film Real Life (1979) with Albert Brooks and worked as a writer on Martin Mull's television series Fernwood 2 Night.