The Linear Men are a fictional superhero team in the DC Comics universe. They first appeared in Adventures of Superman #476 (March 1991). Fictional history The Linear Men are a team of men and women who police time and work to resolve time paradoxes. The core team consists of Matthew Ryder (the leader and founder), an alternate future version of Ryder known as Waverider, Travis O'Connell, Liri Lee, Rayak the Ravager and Rip Hunter, although other members of the Linear Men have been seen from time to time. An alternate Matthew, one who was once employed by Lex Luthor, became part of the team. They operate in a base that exists during the last possible moment in the universe, the last nanosecond before entropy ends everything, called Vanishing Point. Their name is taken from the premise that after the Crisis on Infinite Earths, time is strictly linear and paradoxes can unravel the sole remaining timeline. Thanks to Rip Hunter, they remain blissfully ignorant of Hypertime. Before the Crisis, Travis O'Connell perishes when he detonates the moon in AD 2995. This is exactly what was supposed to happen and Travis O'Connell's sacrifice keeps the timeline on track. During Gog's attack on Superman, killing him in his present and then travelling back to the previous day to do it again, the Linear Men were shaken at the lack of anomalies on their equipment; Superman was being constantly killed, and yet their records still showed him as being alive in the 853rd century without any errors. Rip Hunter explained this anomaly to key DC heroes when he revealed the existence of Hypertime, a mass of alternate timelines, which he had kept secret from the Linear Men due to their inability to accept its existence, subsequently going on the run from his former colleagues after he took the Superman, Batman, and Wonder Woman from the year 2020 - along with the children of various other heroes - back in time to 1999 to help the younger 'Trinity' stop Gog. The Linear Men help Superman fight the threat of Dominus. They are featured heavily in the comic book title Chronos, which featured Walker Gabriel. Gabriel is accused of the murder of a Linear Man agent. Another Linear Agent pursues the protagonist throughout time, including the town of Smallville during its very early 'Wild West' days. This agent is also opposed by a small, time-traveling troupe