Also a note about Error. He's technically not an Undertale character anymore. His creator is going to put him into their original comic. So that lowers the chance even less.
yeah, tho error!sans could easily still appear in stories and stuff, its not like cq decided he’s not allowed to be used in fandom when she incorporated him into lucida
((i’m not terribly fond of error as a character, specifically on account of cq’s portrayal of mental illness in him and 90% of her antagonists, but that’s neither here nor there)) (i do really like her comics im just.) (bitter)