Atomic Robo: The Knights of the Golden Circle — Red 5 Comics
Issue: #3
Atomic Robo is trapped in the year 1884! Disguised as the Old West vigilante 'Ironside,' he's teamed up with the unlikely duo of outlaw Doc Holliday and U.S. Marshal Bass Reeves to stop a vast criminal empire from taking over the Old West.
First appearances: Bass Reeves
Creators: Brian Clevinger, Scott Wegener
Characters: Doc Holliday, Atomic Robo, Bass Reeves