Gene Stupnitsky Director, Screenwriter Jacob Tremblay Max Actor Keith L. Williams Lucas Actor Brady Noon Thor Actor Molly Gordon Hannah Actor Lil Rel Howery Lucas' Dad Actor Midori Francis Lily Actor Will Forte Max's Dad Actor Izaac Wang Soreen Actor Millie Davis Brixlee Actor Josh Caras Benji Actor Mariessa Portelance Max's Mom Actor Retta Lucas' Mom Actor Michaela Watkins Saleswoman Actor Christian Darrel Scott Marcus Actor Macie Juiles Taylor Actor Chance Hurstfield Atticus Actor Enid-Raye Adams Thor's Mom Actor Lee Eisenberg Screenwriter, Producer Evan Goldberg Producer Seth Rogen Producer James Weaver Producer Josh Fagen Executive Producer Nathan Kahane Executive Producer Brady Fujikawa Executive Producer John Powers Middleton Executive Producer Jonathan Furmanski Cinematographer Daniel Gabbe Film Editing Lyle Workman Original Music Jeremy Stanbridge Production Design Sean Goojha Art Director Victoria Pearson Set Decoration Carla Hetland Costume Design Rich Delia Casting