KANG AND KODOS These two aliens have appeared in several Treehouse of Horror episodes. They've attempted to take over the world. They've taken over the bodies of Politicians. Their spaceship has been attacked by a gremlin. We met them in Hungry Are The Damned, where they kidnapped the Simpsons and attempted to, well, cook them. They can be seen in other episodes, such as Nightmare At 5 1/2 Feet and Attack Of The 50-Foot Eyesores.

	HUGO SIMPSON The apparent evil siamese twin of Bart Simpson, Hugo appeared in The Thing And I from Treehouse of Horror VII. Bart and Lisa heard noises coming from their attic and soon became suspicious of them. They soon discovered Hugo. Hugo escaped and tried to sew himself back to Bart. His attempt eventually failed as he was caught. After examining Bart, Dr. Hibbert realized that Bart was the true evil twin. Hugo became part of the family and Bart ended up living off fishheads.

	LARDLAD In Attack Of The 50-Foot Eyesores, Lardlad came to life after Homer stole his donut. Along with Lardlad, other town statues attacked the town of Springfield. People struggle to find a resolution to their big problem. Lisa, not suprisingly, discovers how to stop the statues. By not looking at them, they die. Soon, all of the statues have collapsed, except one, that being Lardlad. Homer can't take his eyes off him. Homer is soon told what to do, and Lardlad dies. Poor guy.

	WILLIAM BONNEY In The Fright To Creep And Scare Harms from Treehouse of Horror XIII, Lisa read off of a tombstone in the Springfield Cemetery. The name on it, William Bonney. In his epitaph, he wished for a world without guns. Lisa then started a gun-free campaign in Springfield and soon, the town was without their guns. Soon after, Bonney and his gang of zombies rose from the dead and attacked the newly defenseless town of Springfield. It would take a time machine and Homer to reverse this whole conflict.