And then he can begin inquiring into their true names. It seems just crazy enough to be true and if it is true, does one lead them or are they more of a cohesive unit? Let's say they do have a leader and there is one Joker that reigns supreme.
Many comics have said that Sans is the older brother... But I haven't gotten any proof yet. It makes sense that Sans could be the older brother... But it makes just as much sense that Papyrus could be the older brother.
Papyrus takes on the older brother roles of cleaning, cooking, and work. Sans is super lazy and adopts the role of little brother. I believe this is based on a fan theory that they are both created by Gaster. Buuuttt it's a fan theory, so I'd scratch that. Loading editor. Edited by Aicilespear 00:53, January 6, 2016.