This film was supposed to be mainly about the Three Tremor Brothers, who are Darwin, Lester and Jeeves, yet only one has yet confirmed there return, who is Maury Sterling reprising his role as Lester Tremor. Nothing official has been confirmed by Chris Pine. But Kevin Durand who played Jeeves, has already passed on it. On Janurary 13th, a casting call sheet was posted on spoiler websites containing information that only Jeeves and Lester will have a cameo and they will be led by their sister named AK-47, played by Autumn Reeser. Another Tremor family member, supposedly named "Papa Tremor," will be played by Michael Parks. Although in fact this may make no sense because the Tremors history involves the phrase, "Same Skank mom, different deadbeat dad," which would hold true to the characters not knowing who any of their fathers were.