Ever since Rook was born, he never felt the same way as other people about the value of life or its importance. Rook had felt as though he could accomplish so much more but only to have the weight of society holding him down, taking his anger out through violent episodes. Rook was a foster child and never grew up with the same love and care that most people did. After being kicked from his foster home for his erratic behavior, Rook grew up in the streets, an environment based on stealing, cheating, blaming others, and getting away with doing bad things to get by for personal gain. Later in his teen years, he went from place to place by freighthopping and found that he had a real knack for robbery, burglary, assault, and a sadistic feeling for murder. Most people of this type would typically use some excuse such as a glorious worldview or some abstract moral compass; Rook had no such thing. He enjoyed killing people because he thought he was better than them; for no other reason. If he didn't like someone and knew he could get away with it, he'd kill them under any means necessary.

Years later, Rook has created an alternate identity, Thomas Ryder, a regular accountant who works for the BoB (Brothers of Blood). He goes about his life in Chicago simply existing and getting by. he slips into a serial mood and decides to kill at random. Rook usually obtains his gadgets from local gang members, arms dealers, and traffickers, but most often than not stolen. Rook can't help but hope to kill bigger; all he has ever killed have been lowlifes, thugs, and homeless people. He's killed people he knows will get away with as no one will miss them. Rook wishes to be genuinely indiscriminate with his killings but to do that, he needs to get better, finding some way to eliminate his existence from this world; so that his authentic narratives are never to be found.