Frank's the leader of the Stillwell gang and the former boss of Theodore and Amos, when the latter accidentally shoots him in the leg. He hears about the gold nugget Bobby, Clovis and Celia Bradley find. He is planning to steal it. He impersonates a priest and goes to the bank it's in, but Bobby, Clovis, Celia, Theodore, and Amos get in the run. Because of a lot of gunfire there, he gives it up and lets Theodore and Amos have it. Russell Donovan and Magnolia "Dusty" Clydesdale stop him because he is kidnapping Celia. And in the end, Homer McCoy arrests him.