So Drian was always a mentally unstable child. He hated Robert for killing his dad, even though his dad was an abusive asshole and Robert was probably trying to help.
It's really sad. He even created a completely new personality to keep himself from feeling lonely after his dad died and to kind of keep him from remembering how awful his life was, easier to blame Robert in that sense.
And now that second personality doesnt know if hes really real or what he even is.
Drian's dad was such a scumbag. Drian just...had no one and nothing else. Even being beaten was some form of attention. It's sad how thats a thing even irl.