As Walker was a Murkoff employee, the killings were blamed on another veteran called Omar Abdul Malik, which was the attacking patient Walker had restrained on one of the tapes. Walker grabbed his attacker and threw him out through the window but when he walked outside to finish him off, the other investigator ran over Walker with his car and knocked him out. The bullets ripped off his flesh on impact, scarring his face horribly. The investigator on the ground shot at Walker multiple times, hitting him in the cheek. He threw one of them to the ground and grabbed the other one by the throat. The officers drew their guns and ordered Walker to stand down, Walker however attacked. Walker returned home moments later, with the head of the last victim in his hand.

They searched the house and found that Walker was still sleeping with a stuffed animal, a little pig. The investigators realized that Walker was bound to arrive home soon and waited for him. Three of them contained the heads of Walker's previous victims, one was still empty. They headed to Walkers house, where they found four cooler boxes. As only two people had access to the room, and one of them was the victim, the investigators realized that Walker was the one behind the murders. When they arrived at the surveillance room however, all monitors were smashed. When a fourth victim was found in a therapy room, the investigators knew that there had to be video footage of the murder. An unassuming Walker revealed to them that he is 'good at violence' and was also member of the Military Police. On one of the tapes, a inmate was seen assaulting a therapist but he was quickly restrained by Walker, giving the investigators a demonstration of his immense strength. The two investigators asked Walker to show them footage of the murdered vets. As every therapy session was secretly monitored, Walker was able to see every therapy session in the clinic. Two Murkoff investigators were sent to Spindletop to investigate the murders without involving the police, where they met Walker, who was watching the surveillance feed. When the bodies of his victims were found, they had been brutally ripped apart. He started murdering three inmates, all war veterans.

There, he gained the nickname 'Strongfat' which he despised. He became surveillance guard for the Spindletop Psychotherapy Clinic in Texas, a Murkoff facility which was supposed to help returning veterans cope with PTSD. Despite his stature and his almost inhuman strength, Walker had a child-like mind. In Comics published by Red Barrel, Chris Walker is revealed to have been hired as a security guard for Murkoff after returning from Afghanistan.

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