Campaign: Hollow Earth Expedition
Billy described how he named the character in a Fandi-blog post:
- "Jack Mavrickson was first inspired by the cowboy in the Mummy. Sure, people might have loved Brendan Fraser in the movie (admittedly, he was sort of awesome), but I loved the cowboy that was offed by the Mummy half way through the movie. He had the right look, the right attitude, and the right sort of gun slinging skills to pique my interest. And when Angela brought up running a pulp campaign, he was the person I used to create Jack Mavrickson."