User Control is an Ability Power Disc from the TRON universe in Disney Infinity, featuring TRON as he is seen in Tron: Uprising. It's a Toys "R" Us exclusive power disc, although it will also be released in Series 2. It was released on September 7th, 2013 to coincide with the first power disc trading event.
Note: All Toys 'R' Us exclusive Power Discs have unique SKU/UPC codes. Tron User Control has SKU 712725023980. The Toys 'R' Us exclusive version is opposite in design the the regular version shown above: the plastic is red, the label is white with a red star in the "tab" area of the label.