Yeager

Yeager was one of the Future Dean Winchester's followers in the post-Apocalyptic future seen in The End. He and the Future Dean were out on a mission to retrieve the Colt when they were ambushed by Croatoan zombies. Yeager was infected during the fight, and the Future Dean noticed the symptoms. When he and Yeager got back, Future Dean handed Yeager a beer, then shot him from behind while he was drinking it. The Present Dean witnessed this and confronted his future self over Yeager's death. The Future Dean defended himself by saying that he didn't see the point in "troubling a good man with bad news."

Yeager's current status is unknown since the Apocalypse was averted in the Present.