R2-D2 is a Extra Character in Lego Indiana Jones. R2-D2 is C-3PO's friend. He is another one out of five you have to find to buy Han Solo. He is the one of two secret characters you can find in story mode. The other is Luke Skywalker. You can find him at the start of Desert Ambush, where you climb a cliff and pull down a rope to make him fall down.