Protect the forgotten (an undertale au fanfic stuff)

((OK, so I'm now to this whole writing a book thing, I've never done it before in my life, and this is my first one, I'm writing this because I've wanted to for a long time, this does have undertale au related things and stuff, there's alot of undertale au stuff))
Hello, I'm CT-29!! people call me CT though, but most of the time Chara though, I'm not one of the normal Chara's though, I have a brother his name is fut, and we have forgotten eachother for a long time. I happen to know an evil frisk who is stuck with me forever, her soul is collided with mine so she switches with me every time I get angry. And I gain all souls of the dead, of monsters and humans, and all the souls have make me stronger than a normal soul would. I know all the AU's there is, I communicate with them all, all the time, and they all know about frisk and her being there and stuff, but I have had one mission, to find my brother, I left him cuz I had to go, I promised I would find him, but I'm still looking, will I find him, and if I do, what will happen ((sorry if I update slow))