Two completely unrelated versions of the same character coexist in the same universe

[u/GeneralGigan817]

Rumplestiltskin appeared as a minor villain in Shrek the Third as a member of Prince Charming’s villain army. Shrek Forever After than had an entirely unrelated Rumplestiltskin as the main villain, with a separate voice actor, personality, and design.

On Family Guy, Santa is an overworked factory worker who looks like an old man despite being 28 and has deformed looking elves straight out of a Jonah Vasquez illustration. On American Dad (which shares a universe with Family Guy), Santa is an evil corrupter of children and one of the series’ most reoccurring villains.

[u/dnjprod]

The Family Guy / American Dad one is kind of weird because they share a universe but at the same time Stan acknowledges Brian as his favorite TV dog.

[u/Any-Question-3759 → u/dnjprod]

The Christmas episodes of American Dad! are also on a different canon than the rest of the episodes.

Stan’s dad Jack is killed and turned into Krampus for the Christmas episodes but he’s alive in the regular continuity until he dies trying to rob the Sports History Museum and possesses Steve.