The early gen actually pretty much adapted quickly and either chose to make a parasitic bond with their hosts or, rarely, an Mutalisic bond with their hosts

Readers generation is a early version that managed to escape containment after the creators decided to terminate all of them. Reader and True!Fresh are actually the same species, its just that Fresh is an older generation that had gotten out of containment- where most of them died (besides Fresh) because they couldnt adapt properly. They(regarding the other parasites similar to Readers version of the parasite) usually stick to one Host because of this. True!Fresh sans but like, better since they let their host actually recover their soul energy and form a Mutalisim type relationship between host and parasite. Once a swap!sans called blueberry, his au was almost completely wiped out by error except both sans and papyrus.Reader in that WIP fic was supposed to be like…. for unknown reasons error has decided to abduct Blue rather than kill him, leaving papyrus to be found by CORE!Frisk and be taken to the omega timeline. Over time Error becomes more accustomed to Blue's company, eventually showing him a Transdimensional window of his first time leaving the anti-void as well as his first kill, this, in turn, makes blue extremely uncomfortable, leading him to say 'I'm still your friend, error. deeming this as manipulation, error snaps at blue and confronts him on what he calls 'fake friendship', and shows him the soul of his human and explains the concept of resets, explaining how he didn't just randomly attack his au, but rather observed his au waiting for the right chance to strike, error then attempts to get blue to fight him, resulting in blue believing that error doesn't want him to right them and that he has found errors weakness, that being that he is scared of friendship. this assumption angers error so much that he abandons blue in the anti-void with the human soul and as a result of being trapped in the anti-void for so long. blueberry became an error.Īt some point, he would have found a home in the Omega Timeline after defeating error!undyneīlueberror would have recognized he could not go back to his old timeline the way he is now and would have given his world, to the other Underswap Sans that was in the Omega Timeline. So, the other Underswap Sans would have had a happy ending there.īlueberror would have likely gone through all the stages– he would have been furious at Error, nearly trying to kill him, etc. and error, horrified by this result would distance himself, realizing that he did the same horrible thing to someone else, that he did to himself. while blue would get over his rage towards Error, recognizing that his anger was just poisoning him. He chose to forgive, and try and accept his new lot in life. His appearance looks like Underswap Sans's, but has also changed his appearance. Blueberror is a black skeleton with purple/blue arms. He wears black gloves and his armor have mostly changed as well.

He wears black pants that have a vertical yellow stripe on each leg. his shirt (chestplate?) is also black but also has blue sleeves underneath his black half-circle pauldrons. He wears a red scarf instead of a blue one. three yellow stars are near his right eye, while there is only one near his left eye. His nose and eyes are blue on the inside.

Underswap sans ecto body