|Friends||MetalBeard, Magician, Speed Racer, Disco Dude, Lady Pirate, Male Pirate, Witch, Mime, Medusa, Zookeeper, Michelangelo, Justice League|
The Flash was part of MetalBeard's crew that stormed Octan Tower. The plan fell apart when the Flash along with the Ringmaster were captured at gunpoint by hundreds of Robo Feds. Afterwards, he was presumably put in a Think Tank before being freed when Emmet jumped out of Octan Tower with the battery that was to be used to kill all of the Master Builders. After the T.A.K.O.S. is destroyed, he is seen with Green Lantern, Wonder Woman, Superman, and Aquaman.
The Flash wears a red suit with a mask decorated with two yellow lightning bolts on the sides of the mask. His suit is decorated with his signature logo with a white circle and a lightning bolt going through it. Around his waist is a belt shaped like a lightning bolt. His skin is flesh-colored like all licensed characters in movie and he has orange eyebrows. Similar to Bad Cop/Good Cop, he has two faces; one happy, one angry. The lower right of his other face can be partially glimpsed as he and the Ringmaster are caught. This can be seen for three frames.
- He and Aquaman are the only DC heroes in the movie who do not appear in the video game.