Donovan (Desert) is a version of Walter Donovan in his Desert attire. He dies in this version when he drinks from the wrong cup, decays and ages up 1000 years and breaks to pieces.
In LEGO Indiana Jones Edit
Donovan in Desert uniform appears in LEGO Indiana Jones: The Original Adventures as a Non-Playable character. However, you have all the parts you need for creating him in the Character Creator in the Art Room at Barnett College.