The Box (third iteration)

The third iteration of the box was confirmed to exist by Nightmaronne after Scott failed to get Timmy and N. ??? to take The Challenge. It has two locks, and two keys-Each chosen one will collect their key (light gets yellow, dark gets black/purple), and together, they will open it and take The Challenge.

This box has yet to be found, but it will likely be found in Fazbear's Fright. (Was the second iteration a fictional replica of this? Scott's hypothesis on what this box contains?)