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.
| Editing | Martin Apelbaum | Editor |
| Costume & Make-Up | Alysia Raycraft | Costume Designer |
| Directing | Adam Rifkin | Director |
| Writing | Adam Rifkin | Writer |
| Production | Brad Wyman | Producer |
| Visual Effects | Adam Clark | Visual Effects |
| Visual Effects | Scott Billups | Visual Effects Supervisor |
| Camera | Scott Billups | Director of Photography |
| Production | Tom Schatz | Executive Producer |
| Production | Deanna Brigidi | Casting |
| Visual Effects | Gretchen McNelis | Visual Effects |
| Production | Carolyn Pfeiffer | Producer |
| Art | Christopher Stull | Production Design |
| Production | Beth Sepko | Casting |
| Production | Susan Kirr | Line Producer |
| Sound | Alex Wurman | Original Music Composer |
| Art | David Utley | Storyboard Artist |
| Lighting | Todd Smiley | Gaffer |
| Camera | Neil Fraser | Key Grip |
| Costume & Make-Up | Amanda Vinopal | Set Costumer |
| Directing | Meg Beatty | Additional Second Assistant Director |
| Crew | Jim Henry | Stunts |
| Production | Karen Wacker | Production Coordinator |
| Directing | Scott R. Meyers | Second Assistant Director |
| Camera | Wes Ahl | Best Boy Grip |
| Crew | Jeff Schwan | Stunt Coordinator |
| Directing | Bobby Bastarache | First Assistant Director |
| Art | Marcus LaPorte | Leadman |
| Lighting | Jeffrey W. Petersen | Best Boy Electric |
| Camera | Alex Certain | Best Boy Grip |
| Production | Sheila Steele | Casting Associate |
| Sound | Steve Tushar | Sound Designer |
| Sound | Adrian Gauslin | ADR Recordist |
| Camera | B. Sean Fairburn | Camera Operator |
| Costume & Make-Up | Melizah Anguiano Wheat | Makeup & Hair Assistant |
| Crew | Everett Byrom III | Special Effects Coordinator |
| Sound | Rod O'Brien | Sound Effects Editor |
| Sound | Michael Kreple | Foley Mixer |
| Production | Susan Kirr | Unit Production Manager |
| Art | Erin McMaster | Art Department Assistant |
| Art | Byron Scott Thomas | Property Master |
| Sound | Brett Hinton | Music Editor |
| Costume & Make-Up | Catherine Conrad | Makeup Department Head |
| Sound | Roanna Gillespie | Music Supervisor |
| Sound | Mark Lutte | Production Sound Mixer |
| Editing | René Pinnell | Associate Editor |
| Visual Effects | Minky Billups | Compositing Lead |
| Sound | Andy Hay | Sound Re-Recording Mixer |
| Costume & Make-Up | Lucky Cardwell | Costume Assistant |
| Directing | Linda Giffin-Citron | Script Supervisor |
| Sound | Paul Stanley | Supervising Sound Editor |
| Crew | Meriwether Tull | Post Production Supervisor |
| Lighting | Robert Janecka | Best Boy Electric |
| Costume & Make-Up | Catherine Conrad | Hair Department Head |
| Editing | David Hobizal | Assistant Editor |
| Crew | Guy Noria | Choreographer |
| Crew | Dick Hancock | Stunts |
| Camera | Jeremy Rodgers | First Assistant Camera |
| Camera | David McGill | Steadicam Operator |
| Costume & Make-Up | Michele K. Short | Set Costumer |
| Costume & Make-Up | Ian Taylor Fisher | Costume Assistant |
| Sound | Jesse Pomeroy | Supervising Sound Editor |
| Sound | Jackie Johnson | Dialogue Editor |
| Costume & Make-Up | Morgan Campbell | Makeup & Hair Assistant |
| Production | Mark Jarrett | Location Manager |
| Sound | Francisco Koch | ADR Mixer |
| Editing | Mattt Potter | Additional Editing |
| Visual Effects | Mattt Potter | Compositing Artist |
| Sound | Hilda Hodges | Foley Artist |
