The character poster for Night at the Museum: Secret of the Tomb star Ben Stiller. He's back as Larry... and a caveman!

The Night at the Museum: Secret of the Tomb Robin Williams poster. Williams is back as Teddy Roosevelt.

The Night at the Museum: Secret of the Tomb Dan Stevens poster. Stevens is Sir Lancelot.

The Night at the Museum: Secret of the Tomb Steve Googan Owen Wilson Character poster. Ben Stiller stars in his third Night at the Museum movie.

Ben Stiller also plays a caveman who looks a lot like his security guard Larry. Laa gets his own character poster for Night at the Museum: Secret of the Tomb.

The Night at the Museum: Secret of the Tomb Rebel Wilson poster. Wilson joins the film series as a British museum guard.

The Night at the Museum: Secret of the Tomb Ben Kingsley poster. Kingsley joins the cast in the third Night at the Museum movie.

The Night at the Museum: Secret of the Tomb Ricky Gervais poster. Ben Stiller stars in the third Night at the Museum movie.

The Night at the Museum: Secret of the Tomb Ben Stiller Poster. Stiller is back as Larry.

The first Night at the Musem: Secret of the Tomb poster is here! Ben Stiller is back!

The poster for Night at the Museum: Secret of the Tomb. Ben Stiller is back.