why tho

The most evidence that it is gaster is a gaster follower holding a piece of gaster that looks like mystery man's head

i think someone thought that this was gaster for no apparent reason, and the fandom went along with it for the next 4 years bc arguing is hard

that sprite is found in a room that has a incredibly low chance to appear, and its most likely to be gaster because its similar to the piece of gaster that the gaster follower was holding

also game theory *intro starts playing*

That's my own theory not game theory

ik, i was saying in addition to that, also game theory *intro starts playing*