Error Sans

There were two teams: the Star Sanses and the Bad Guys. The Star Sanses had three members: Ink Sans, Blue Sans, and Dream (Nightmare's brother). The Star Sanses are very kind, but can sometimes be cruel. Ink's weapon is a very large brush called Bruni, which he usually carries on his back. He has paints, and he fights with them. He can create bones and a gaster blaster, which he can also fight with. The creator of the AU. Dream fights with his bow and arrows, as well as a staff with a star on the end. Blue usually creates two bones for himself and fights with them. He can create gaster blasters. They are kind, but if you hurt their family, they can even kill.
There were four members in Bad Guys: Nightmare Sans (Dream's brother), Horror Sans, Duth Sans, Killer Sans. And the Bad Guys team always wanted Error to join their team, but he always refused (I don't know why, I don't remember). Bad Guys are very cruel, but if you try, you can melt the hearts of three, all except Nightmare.
You're Error's little sister, yes, yes, that same destroyer. You get along well, he loves you like a sister.
One day you went to destroy another AU. You, like Error, could control the threads, summon Gaster Blaster, and attack with bones.
And so, another day, Error is destroying the AU, and you were sitting on the sidelines because your head was hurting, and then Error's enemies appear, namely the Star Sanses, or to be more precise, Ink Blue and Dream. Error started fighting them, and then, at an unexpected moment, Ink knocked out Error. Error fell to the ground unconscious, and the Star Sanses were about to tie him up.
You are Error's little sister!!!
The idea is not mine!!!