He originated the part of "The Visitor" on the Geffen Playhouse stage in the World Premiere Steppenwolf Production of the initial 357 performances of Steve Martin's Picasso at the Lapin Agile.
He then wrote the screenplay for, acted in and worked as an executive producer for the film Elvis & Nixon.
He also appeared in “Not Another Celebrity Movie,” meant to be a spoof of the Ocean's Eleven film, playing a comedic version of George Clooney.
He later played an announcer directly made to impersonate Elvis in the movie Redline, which was meant to pay homage to the Fast and the Furious franchise.
Sagal returned to his Elvis role by playing him again as a vampire hunter on the SyFy channel in the series The Chronicle in the episode “ The King is Undead”.