Season 3: At the end of season 2, Doc is possessed by the AI known as O' Malley, which formally resided in both Tex (season 1) and Caboose (season 2). Realizing that O' Malley could destroy them, the Reds and the Blues decide to team up in an attempt to destroy him. However, when they tamper with the teleporters, they end up in different places, leaving people alone with their once sworn enemies. Red vs. Blue Season 3 is even funnier than ever as new maps are introduced to the story line, and don't forget about the twist ending.
—Edge0914