BB!Papyrus/History

For more details, read about the Bad Brother AU here.

Pre-SHAETALE/Debut Arc
Not much is known about BB's life before the abuse began, or when the abuse began. It is assumed the abuse began sometime after Flowey began doing RESETs, or at least that's when the abuse got to its worst. BB, over time, lost more of his loud, cheerful personality and instead became more shy and terrified.

Debut
BB, attempting to escape BB!Sans, runs through a portal he stumbles across by that was opened by Gaster, who had been looking for his timeline, but left the portal open by mistake to go ask for Ariel's help. BB, confused, looks around at the new place he's in; he's on the surface next to an unusual house. Shae notices him outside and goes out to talk to him under the impression he's her timeline's Papyrus, though confused since Papyrus had went to take a nap soon before BB arrived. She then notices he's not her timeline's Papyrus; as well as his eye scar and his lack of the battle body. However, the second she talks to him, BB instantly becomes frightened and begins to run away again. She, being abused in the past as well, is able to instantly realize he's acting just like her when she was being abused and is immediately suspicious his own situation is likely abuse. She quickly tries to run after him to try and talk to him. Realizing that she isn't Sans, BB stops in his tracks, and looks back at her; he sees that she is a human and means no harm. She offers to let him come inside the house so he can rest and get something to eat. He reluctantly agrees and states he's not allowed to have dinosaur oatmeal.

When they go to get him oatmeal, Sans comes in and frightens BB.