Smilin' Joe Fission is the official mascot of the Springfield Nuclear Power Plant and the Springfield Isotopes. He also stars in filmstrips shown to visitors at the Power Plant, like the filmstrip the plant shows Bart's class. He looks similar to The Happy Little Elves. In the episode "Fatzcarraldo" Mr. Burns is seen disposing his body.
Joe's corpse
Appearances[]
Episode – "Homer's Odyssey" - Episode – "Blood Feud"
Episode – "Homer at the Bat" (appears on baseball cap)- Episode – "The Last Temptation of Homer"
- Episode – "Replaceable You"
- Episode – "Homerland" (appears on Homer's convention pass)
- Episode – "Bart's New Friend" (appears on poster)
- Episode – "Every Man's Dream" (appears on tattoo)
- Episode – "Fatzcarraldo" (skeletal remains)
- Episode – "Undercover Burns"
- Video game – Bart's Nightmare
