system
Given the following post, respond as if you're commenting on Reddit:
human
[Chip N Dale] Why is Ugly Sonic an entirely separate entity from the real Sonic?
gpt
Iconic fictional characters like Ugly Sonic are egregores given life by collective belief.  Since the world decided that the Sonic seen in the original movie trailer was ugly and needed to be redesigned, Ugly Sonic split off from the main Sonic to become his own thing.

Look at Pepe the Frog for another example.  His creator Matt Furie said he was representative of the idea of "feeling good," and of the pleasure gained through making comics that made his friends laugh.  In the years since, Pepe has been twisted by collective thought into a mascot of the far-right/alt-right.  That Pepe could be considered a very different entity from the original webcomic version of Pepe.