| 角色 | 饰演者 | 角色介绍 |
| Cort Eastman | Ross Hagen | |
| Andrew Paris | 杰弗瑞·考姆斯 | |
| Eddy Colchilde | Dawn Wildsmith | |
| Prof. Strock | 罗伯特·夸里 | |
| Denae Chambers | Susan Stokey | |
| Bill | 鲁斯·谭柏林 | |
| Alien Queen | Sybil Danning | |
| Cave Bunny | Michelle Bauer | |
| Picnic guy (as Michael D. Sonye) | Michael Sonye | |
| Picnic girl | Victoria Alexander | |
| Simon | Duffy | |
| Pedro | Tony Lorea | |
| Himself | Robby the Robot | |
| Mutant | Gary J. Levinson | |
| Mutant | John Gonzales | |
| Mutant | Jon Edmunds | |
| Mutant | Dan Malloy | |
| Mutant | Jerry Shull | |
| Mutant (in park/in cave) | Bob Ivy | |
| Cavegirl | Tricia Brown | |
| Cavegirl | Nicole Morgan | |
| Cavegirl | Julie Crow | |
| Cavegirl | Angela Post | |
| Cavegirl | Liat Mathias | |
| Cavegirl | Corey Kaplan | |
| Cavegirl | Maggie Martin |
