If Error isn’t in Nightmare’s Gang, I think he should be in the Star Sanses.
How dare Ink spend all his time with other people? Without him!?
He needs to stick around Blue and make sure he doesn’t become an error (if you think the swap in the star sanses is the swap from the ask error comic)
He loves the stars, and the group is named after them. He fits the ascetic.
It’s funny. Imagine your world is being destroyed by Nightmare, then the ‘destroyer of worlds’ saves you
He doesn’t put up with the bullshit that I normally seen thrown at the Stars. The Stars are varying degrees of people pleasers, he is not.
Dream would have scary dog privilege, buff friend privilege, and gremlin friend privilege.
Just think about them all for a second.
If Error is friends with Ink and Blue, why not Dream as well?
It would balance the catboy/dogboy vibes in the group.
If Nightmare tried to push him into his group too hard, Error joins his enemy to spite him.