Presley, or characters bearing a suspicious resemblance to him, have a long history of appearing in American comic book universes. These are often cameos using Elvis' iconography to signpost time periods or cultural moments. Sometimes, these are affable gags paying homage to the King, and occasionally, The King is a comic book star in his own right.
In the aftermath of World War Hulk, writer Greg Pak spun out the adventures of Hercules and his trusted ally Amadeus Cho. In The Incredible Hercules #129, produced with co-writer Fred Van Lente and artists Ryan Stegman and Terry Pallot, the Marvel incarnation of the famous demigod travels to the underworld.
Hercules and Amadeus soon end up in The Erebus, a Vegas-style casino constructed by Hades for the hordes of the undead. While rushing past the gambling room, they even spot the ultimate Elvis impersonator: the King himself.