Cassidy was holding you down, he was murdered by you're father William Afton, you're both ghosts. why is he holding you down? you lost you're bracelet that keeps you sane, so now you're insane and powerful side took over. he isn't gonna use violence since you're his best friend, and because you're only 3.

"CC, calm down."

his voice was filled with emptiness as he ordered you to calm down.