I don't get it

One is the purple guy (william afton) from fnaf, the other is a guy named william afton from a different horror game but the name eludes me, in the other game, not fnaf, he is basically an easter egg that has the same story and lore as william afton from fnaf

I think the game was "thats not my neighbor"

Oh, you said it already.

Yeah

Huh. Interesting.

That's Not My Neighbor?