Stiller was born in 2219. He's a fair man who tries to come across as tough, but everyone really knows he's mostly talk and pomp. When the going gets tough, he will step in, but it is obvious he is not quite as skilled as he thinks he is. It's a good thing Mitch has back-up, or situations would most certainly turn for the worse.
Help Beatrice in a bar fight - During a bar fight, three individuals with cattle prods and a super sledge will try to get the best of Beatrice, a super mutant. The fight will not go very well for Beatrice, so the player will have the option to jump in and help Beatrice. Once Beatrice reaches 10% of her total HP, Mitch Stiller and his posse will come in and break things up (shoot the bad guys).
Mitch Stiller has not appeared nor is he mentioned in any published game. He was to appear only in Van Buren, the canceled Fallout 3 by Black Isle Studios. It is not certain if he will appear in any future Fallout game.