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