When I/O began to look into Project: Thunderbook, John Lynch began to track down the previous subjects, starting with Slayton. However, when Lynch found out about his loss of sanity, Slayton attempted to murder him. After Lynch escaped, Slayton began to hunt him down, along with other Gen:Active subjects created by I/O rival Skywatch's Dr. Helspont after the deterioration of Thunderbook. Along the way, Slayton murdered one other Skywatch implanted agent, and attempted to attack Midnighter and Apollo, but fled as soon as it was clear he could not take them. Slayton eventually found Lynch after he warned all of the other members of Thunderbook, but was convinced by him to instead go to New York to take out I/O, as it would be beneficial to the 'Carer.'