Ishbo is a caveman living in the prehistoric age who thinks there's more to life than hunting and gathering. He tries to better the lives of those in his tribe by inventing things like spoons and the toothbrush, which leave everyone, including his parents, unimpressed. He also has a thing for cavewoman Fardart, but she only has eyes for his brother Thudnik. Can Ishbo prove his worth when a rival clan attacks?
Unfortunately the movie Homo Erectus is not yet available on HBO Max.
| Production | Deanna Brigidi | Casting |
| Production | Beth Sepko | Casting |
| Visual Effects | Scott Billups | Visual Effects Supervisor |
| Visual Effects | Adam Clark | Visual Effects |
| Visual Effects | Gretchen McNelis | Visual Effects |
| Costume & Make-Up | Alysia Raycraft | Costume Designer |
| Sound | Alex Wurman | Original Music Composer |
| Art | Christopher Stull | Production Design |
| Editing | Martin Apelbaum | Editor |
| Camera | Scott Billups | Director of Photography |
| Production | Susan Kirr | Line Producer |
| Production | Tom Schatz | Executive Producer |
| Production | Carolyn Pfeiffer | Producer |
| Production | Brad Wyman | Producer |
| Writing | Adam Rifkin | Writer |
| Directing | Adam Rifkin | Director |
| Production | Susan Kirr | Unit Production Manager |
| Directing | Bobby Bastarache | First Assistant Director |
| Directing | Scott R. Meyers | Second Assistant Director |
| Directing | Meg Beatty | Additional Second Assistant Director |
| Crew | Jeff Schwan | Stunt Coordinator |
| Crew | Dick Hancock | Stunts |
| Crew | Jim Henry | Stunts |
| Production | Karen Wacker | Production Coordinator |
| Camera | B. Sean Fairburn | Camera Operator |
| Camera | Jeremy Rodgers | First Assistant Camera |
| Camera | David McGill | Steadicam Operator |
| Art | Marcus LaPorte | Leadman |
| Art | Erin McMaster | Art Department Assistant |
| Art | David Utley | Storyboard Artist |
| Sound | Mark Lutte | Production Sound Mixer |
| Art | Byron Scott Thomas | Property Master |
| Lighting | Todd Smiley | Gaffer |
| Lighting | Robert Janecka | Best Boy Electric |
| Lighting | Jeffrey W. Petersen | Best Boy Electric |
| Camera | Neil Fraser | Key Grip |
| Camera | Wes Ahl | Best Boy Grip |
| Camera | Alex Certain | Best Boy Grip |
| Costume & Make-Up | Amanda Vinopal | Set Costumer |
| Costume & Make-Up | Michele K. Short | Set Costumer |
| Costume & Make-Up | Ian Taylor Fisher | Costume Assistant |
| Costume & Make-Up | Lucky Cardwell | Costume Assistant |
| Costume & Make-Up | Catherine Conrad | Hair Department Head |
| Costume & Make-Up | Catherine Conrad | Makeup Department Head |
| Costume & Make-Up | Morgan Campbell | Makeup & Hair Assistant |
| Costume & Make-Up | Melizah Anguiano Wheat | Makeup & Hair Assistant |
| Production | Mark Jarrett | Location Manager |
| Directing | Linda Giffin-Citron | Script Supervisor |
| Crew | Everett Byrom III | Special Effects Coordinator |
| Production | Sheila Steele | Casting Associate |
| Editing | René Pinnell | Associate Editor |
| Editing | David Hobizal | Assistant Editor |
| Editing | Mattt Potter | Additional Editing |
| Crew | Meriwether Tull | Post Production Supervisor |
| Visual Effects | Minky Billups | Compositing Lead |
| Visual Effects | Mattt Potter | Compositing Artist |
| Sound | Jesse Pomeroy | Supervising Sound Editor |
| Sound | Paul Stanley | Supervising Sound Editor |
| Sound | Steve Tushar | Sound Designer |
| Sound | Rod O'Brien | Sound Effects Editor |
| Sound | Jackie Johnson | Dialogue Editor |
| Sound | Francisco Koch | ADR Mixer |
| Sound | Adrian Gauslin | ADR Recordist |
| Sound | Michael Kreple | Foley Mixer |
| Sound | Hilda Hodges | Foley Artist |
| Sound | Andy Hay | Sound Re-Recording Mixer |
| Sound | Brett Hinton | Music Editor |
| Sound | Roanna Gillespie | Music Supervisor |
| Crew | Guy Noria | Choreographer |
