Guy Pearce (Alexander Hartdegen), Samantha Mumba (Mara), Orlando Jones (Vox), Mark Addy (David Philby), Jeremy Irons (Über-Morlock), Sienna Guillory (Emma), Omero Mumba (Kalen), Phyllida Law (Mrs. Watchit), Yancey Arias (Toren), Richard Cetrone (Jäger-Morlock), Mark Kubr (Jäger-Morlock), Edward Conna (Jäger-Morlock), Doug Jones (Spion-Morlock), Dorian Kingi (Spion-Morlock), Lennie Loftin (Soldat #1), Thomas Corey Robinson (Soldat #2), Josh Stamberg (Autofahrer), Myndy Crist (Joggerin), Alan Young (Blumenverkäufer), Max Baker (Räuber)