CLU, the main antagonist from the film "Tron: Legacy", was a planned playable character and boss who was scrapped very close to the game's release. A practically completed playable version of CLU was discovered in the PC version's files (this version was only missing completed UI) and can be used via modifications to the PC version. On May 20, 2016, developer Damean Lyon uploaded a short video showcasing his FX work on the playable version of the character, and revealing the character's Melee Impacts and Ground Pound Decal were developed by Darin Beaver.