The Elvis Presley lookalike is named Aaron Viva. Aaron for Elvis' middle name, and Viva for "Viva Las Vegas," an Elvis song.
The Mayor was named after two of Elvis Presley's entourage: Mayor Sonny Red was named after Red West and Sonny West. Sheriff Aaron Viva was of course modeled after Elvis, and lots of little in jokes were peppered throughout out the episode.
Gary Hudson, who plays the Elvis-inspired Sheriff Aaron Viva, had previously been in "Road House," which also starred Red West, a member of Elvis's "Memphis Mafia."
First appearances of Sherriff Aaron Viva and Whip Morgan.
Sherriff Viva is modeled on Elvis Presley, who was later portrayed by Bruce Campbell (Brisco) in Bubba Ho-Tep (2002).