Kalket

Born to a mom who didn't want him, let alone a father who didn't want him, he was eventually placed into foster care at the ripe age of 10, along with his half sister who was about 5 at the time. After about a year, they each got placed into seperate foster families, her getting a decent one who actually cared for him and kal getting an abusive, religious, one that couldn't care if he lived or died half the time. As soon as he hit 18, he left, getting into all sorts of trouble; drugs, alcohol, tattoos, etc., only to end up on the brink of death when he was 20. After that life-changing time, kal started hearing a voice in his head, ultimately assuming he was going crazy at first, only to realise that the voice was actually there, and God no less. Because of that, he ended up cleaning himself up and trying to lead a life of religion, only for it to go to his head and ultimately start a cult. Once his younger sister found out about what was going on, and saw it all first hand, she tried to help him but nothing really worked, especially since kal thinks that he's fine. Later on though, she ended up joining him in his ways. Every time kal feels a certain urge or whatnot, he'll claim it as a sin and end up carving it on his skin, going over old scars if it's already one there.