Tom Hiddleston Charles 'Chuck' Krantz Benjamin Pajak Charles 'Chuck' Krantz (pre-teen) Nick Offerman Narrator (voice) Chiwetel Ejiofor Marty Anderson Karen Gillan Felicia Gordon Mia Sara Sarah Krantz Mark Hamill Albie Krantz Annalise Basso Janice Halliday Jacob Tremblay Charles 'Chuck' Krantz (teen) Samantha Sloyan Miss Rohrbacher Trinity Bliss Cat McCoy David Dastmalchian Josh Matthew Lillard Gus Kate Siegel Miss Richards Rahul Kohli Bri Harvey Guillén Hector Saidah Arrika Ekulona Andrea Carl Lumbly Sam Yarbrough Michael Trucco Dylan's Dad Q'orianka Kilcher Virginia 'Ginny' Krantz Violet McGraw Iris Andrew Grush Mac Heather Langenkamp Vera Stanley Franklin Ritch Brent Antonio Raul Garcia Brian Krantz Molly C. Quinn Chuck's Mother Sauriyan Sapkota Ram Mike Flanagan Mourner Matt Biedel Doctor Winston Carla Gugino News and Commercial Voice (voice) Elan Gale Radio News Reporter (voice) Scott Wampler Radio Host #2 (voice) Hamish Linklater American Reporter (voice) Axelle Carolyn French Reporter (voice) Sandra Hess German Reporter (voice) Lauren LaVera Italian Reporter (voice) Trevor Macy Mourner (uncredited)