The contents of this article or section are considered to be non-canon and therefore may not have actually happened or existed in-universe.
When Homer uses the cloning hammock, Peter Griffin is one of his mutated clones.[3]
Peter and his family have their car stolen just outside Springfield. They visit Springfield where the family then makes friends with the Simpsons, until Homer and Peter argue over which beer is best, Duff or Pawtucket Patriot Ale. This ends up in a court case between the two companies and the Pawtucket Brewery in Quahog is forced to close down. Peter and Homer have a huge fight over this which ends with Homer crushed under a Spaceship, but he survives. The two then part on good terms but agree to stay 30 minutes away from each other.[4]
A mutant based on Peter Griffin, among other mutants, was unleashed on The Glavin in an attempt to stop it. However, the mutants were unsuccessful and died.[5]
THOH – "Treehouse of Horror XIII" 
Episode – "The Italian Bob" (in a picture in a book)
– "The Simpsons Guy" 
Comic story – Unleash the Glavin (mutant)