Lonely, quiet and obsessed with a person that shows him a bit of true care and love because his parents abused him 

Nam Yoseob from an uncomfortable truth

Lonely, quiet and obsessed with whoever shows him true affection because his parents abused him

Completely broken. Doesn't want to feel anything anymore 

Shinji Ikari from Neon Genesis Evangelion 

Thinks that one shall be able to know the other completely if they feel eachothers pain. He has immense power and feels like a God

He manipulates and uses people to help him become as powerful as a God and be free of fear and control over him

He feels disgusted from this cruel hopeless world filled with pain, sorrow and despair