Rex Tyler

"You're exactly where you said you'd be. Do not get on that ship. If you do, you're all dead."

- Rex Tyler to Rip Hunter's team

Rex Tyler was a male Human from the 20th century who was a member of the Justice Society of America.

Biography
Rex Tyler joined the Justice Society of America at some point and became their leader

Sometime following this, Rex deployed the society on a mission to bring in a group of individuals who posed as government agents. After they returned with the group in custody Rex learned that the group claimed to know him and that they were time travelers. He later interrogated them and after hearing their story, he released them and ordered the Legends to leave 1942 before leaving on a mission given to the society by the president. After having Vixen's cover blown by the Legends, Tyler joined allowed the group to join their mission. After conferring with Marrin Stein he launched an attack on a Nazi transport containing an amulet. Unfortunately both Vixen and The Atom were captured. Upon returning to the ship Sara Lance wished to return to save Amaya and Ray, but Tyler remained adamant that they destroy the Nazi's super serem with an air strike. However after Martin turned over leadership to Sara Lance he agreed to save them. After a successful mission Rex returned home to the JSA headquarters where he was attacked by the Reverse Flash to prevent him from completing his warning to the Legends. The Speedster fled and he was discovered by Amaya and with his dying breath told her his attacker was a time traveler before dying in her arms.

Rex somehow obtained the Legends damaged time ship and time jumped to 2016. Rex Tyler appeared out of a heavily damaged version of the Waverider that crash-landed before the eyes of the befuddled members of Rip Hunter's crew during their meeting soon after their victory over Vandal Savage. As Rex explained, he was sent to Star City in 2389 by Mick Rory to warn the Legends that they would all die if they boarded the Waverider. Rex told the 2016 versions of the team his name, identifying himself as a member of the Justice Society of America.

Tyler warned the Legends not to set foot in 1942 before being erased from the timeline by the Reverse Flash before he could finish his message.