Don Gast is one of the pre-made townies in La Fiesta Tech from The Sims 2: University. He can be made playable by befriending and asking him to move in, or by marrying him. Don has the same facial structure as Chandler Wolosenko.
His skills and interests are randomized upon loading La Fiesta Tech. It is only referenced in the game files that he has no skills, interests, or major. Don's name is randomized when La Fiesta Tech is generated. The name "Don Gast" is only referenced in the game files.