Theories in The Unofficial Five Nights at Sonic's Community

Fnas 3 theory: The reason why Sonic sees the phantoms in fnas 3 is because he probably helped get rid of their living bodies. Since why would he see them otherwise? And that's why Salvage Sonic is aggressive towards him. (it may be far fetched but hey)

so what i think is that nightmaric was a failed experiment from shadow sonic, so thats why he doesnt appear/is unused, and plushnic and plushtails might be the sonic and tails clones from an alt universe turned into plushies but he decided it sucked as-

clone sonic isn't actually sonic

FNaS 5 is the first game in the timeline

clone sonic is william afton