Dix, Dan. Dan Dix is the ship's detective on the S.S. Puerto Rico, a luxury liner. In that capacity he fights a variety of criminals, including smugglers, on ship, in the air, and on land. Dix is hard-boiled and is happy to shoot first and ask questions later. First Appearance: Keen Detective Funnies v2n6 (Centaur), June 1939. 2 appearances, 1939. Created by George Brousek.