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.

Details about the Finding Dory playset were accidentally leaked on the back of a packet of Kraft Macaroni & Cheese Dinner before an official announcement was made.

The Music Island set was based on an unused island concept for the movie Inside Out. A Boyfriend Island was also intended to be a set, but was scrapped when the developers found it "hard to make a game out of boyfriends."

Boba Fett's design in the game appears to be based on the blue Boba Fett action figure by Kenner, released in 1979 as a send away promotion. This is possibly to keep in-line with the toy theme of the game.