What duo in the Simpsons episode "Gump Roast" usually appear in the Treehouse of Horror episodes? 
Gump Roast:  It originally aired on the Fox network in the United States on April 21, 2002. Gump Roast:  In the episode, Homer Simpson is honored by the townspeople at a Friars' Club Roast, until it is interrupted by Kang and Kodos. Kang and Kodos: Kang and Kodos are a duo of fictional recurring characters in the animated television series "The Simpsons". Kang and Kodos:  They are aliens from the fictional planet Rigel VII and appear almost exclusively in the "Treehouse of Horror" episodes.
i don't know