Dwayne Johnson (Jack Bruno)
AnnaSophia Robb (Sara)
Alexander Ludwig (Seth)
Carla Gugino (Dr. Alex Friedman)
Ciarán Hinds (Burke)
Kim Richards (Tina)
Cheech Marin (Eddie)
Ike Eisenmann (Sheriff Antony)
Tom Woodruff, Jr. (Siphon)
Bob Koherr (Marty)
John Duff (Frank)
Kevin Christy (Matt)
Bob Clendenin (Lloyd)
John Kassir (Chuck)
Beth Kennedy (Stenftenagel)
Jonathan Slavin (Gallagher)
Harry Murphy (Analyst D. Pleasence)
Ted Hartley (Four-Star General V. Lewton)
Jack Eastland (General E. Albert)
Meredith Salenger (Natalie Gann)
Andrew Shaifer (Casey Taylor)
Suzanne Krull (Gail Ross)
Christine Lakin (Sunday)
Dave Engfer (Iscovich)
Omar J. Dorsey (Police Officer Hough)
Sam Wolfson (Imperial Stormtrooper Ciardi)
Paul Darnell (Siphon Stunt Double)
Bryan Fogel (Imperial Stormtrooper Gray)
Robert Torti (Dominick)
Steven Rosenbaum (Oren Bergman)
Tom Everett Scott (Matheson)
Chris Marquette (Pope)
Billy Brown (Carson)
Garry Marshall (Dr. Donald Harlan)