Richard Linklater Director, Screenwriter, Producer Jack Black Grown Up Stan Voice, Actor Bill Wise Dad Voice Lee Eddy Mom, Mom Voice, Actor Milo Coy Stan Voice Natalie L'Amoreaux Vicky Voice Josh Wiggins Steve Voice, Actor Sam Chipman Greg Voice Jessica Brynn Cohen Jana Voice Danielle Guilbot Stephanie Voice Zachary Levi Kranz Voice, Actor Glen Powell Bostick Voice, Actor Mona Lee Fultz Grandma Voice, Actor Samuel Davis Joey, Joey Voice, Actor Brian Villalobos Steve Bales Voice, Actor Nick Stevenson SIMSUP, SIMSUP Voice, Actor Glenn Powell Voice Mike Blizzard Producer Tommy Pallotta Producer Femke Wolting Producer Bruno Felix Producer John Sloss Executive Producer Shane F. Kelly Cinematographer Sandra Adair Film Editor Bruce Curtis Production Design Rodney Becker Art Director Kari Perkins Costume Designer Vicky Boone Casting Melissa Cobb Executive Producer