Anakin Skywalker (aka General Skywalker) is a character from the Lucasfilm Ltd. Star Wars film series. He may be used in:

the Star Wars: Twilight of the Republic Play Set with Disney Infinity 3.0 (only) and other Star Wars Play Sets once the Champion Coin has been collected in each,
the Toy Box for Disney Infinity 3.0 only, and
all Toy Box Expansion Games (Disney Infinity 3.0).
He is sold in the starter pack of the game, as well as with the Star Wars: Twilight of the Republic Play Set; and was available at launch. He was confirmed playable on Toy Box TV,[3] but was first seen with the leaked images of the Disney Infinity 3.0 starter pack.[4]