David Clinton's checklist of things to steal (excerpt from his personal digital assistant): M's Dress, Napoleon's Vest, Washington's teeth, Batman's Utility Belt. Given the fact he shares a last name with U.S. president Bill Clinton, "M's Dress" may be an in-joke to Monica Lewinsky's infamous blue dress from the Clinton Scandal, or it could refer to the iconic white dress Marilyn Monroe wore in the classic film The Seven Year Itch (1955).
Jonah Hex's understanding of rayguns and his line, "I've had an interesting life", are a nod to the 1980s comic series Hex, in which the character was time-transported to a Road Warrior-esque post-apocalyptic future.
The subtitle is a reference to Weird Western Tales, a comic series in which many of the western heroes like Jonah Hex and Bat Lash appeared.
In the comics, Tobias Manning is the real name of the Superman villain Terra-Man. The robot he rides here is modeled after Nova, his winged Arguvian Space Steed.
When all of the everyone was walking through town, the scene is an homage to the first scene of the opening sequence on the original Justice League (2001) a western version of the original show's theme could be heard over the scenes of Batman, Wonder Woman, and Green Lantern riding on horses.