Sam Huntington in 'Superman Returns'

Sam Huntington in 'Superman Returns'

ABC is taking a second look at its comedy "Cavemen," recasting one of its Cro-Magnon leads and making some story changes as well.

Sam Huntington ("Superman Returns") has signed on to play Andy, one of the show's three modern-day cavemen, the younger brother to Bill English's Joel. Dash Mihok, who played the younger brother in the pilot, has been let go, according to The Hollywood Reporter.

ABC and the show's producers have also decided to shelve the pilot for now. The series premiere will be a not-yet-filmed episode focusing on the cavemen's back stories, which received almost no mention in the original pilot. The pilot will be held for later in the series, with Huntington reshooting the scenes that featured Mihok's character.

"Cavemen" is based on the Geico insurance ads and expands on the idea of not-entirely-evolved "Cro-Maggers" living in the 21st century. The show also stars Nick Kroll as the third caveman, along with John Heard ("Prison Break"), Kaitlin Doubleday ("Accepted") and Stephanie Lemelin.

Huntington played Jimmy Olsen in "Superman Returns." His credits also include "Not Another Teen Movie," "Sleepover" and guest appearances on "Veronica Mars," "Law & Order" and "CSI: NY."