Een Amerikaanse journalist die in Japan is gestationeerd, krijgt een mysterieuze injectie van een gekke wetenschapper, waardoor hij verandert in een moorddadig, tweekoppig monster.
Nee, helaas is The Manster nog niet beschikbaar op Netflix in Nederland.
| Directing | George P. Breakston | Director |
| Writing | George P. Breakston | Story |
| Writing | William J. Sheldon | Writer |
| Production | William Shelton | Executive Producer |
| Production | George P. Breakston | Producer |
| Production | Ryuichi Aimono | Producer |
| Production | Robert V. Perkins | Producer |
| Sound | 小川寛興 | Original Music Composer |
| Art | Noboru Miyakuni | Art Direction |
| Costume & Make-Up | Fumiko Yamamoto | Makeup Artist |
| Production | Richard Herbine | Unit Production Manager |
| Production | Yuji Honda | Production Manager |
| Production | C.D. Sykes | Production Supervisor |
| Sound | Chisato Ota | Recording Supervision |
| Crew | 高木新平 | Special Effects |
| Costume & Make-Up | 鈴木和夫 | Costume Design |
| Editing | Kenneth G. Crane | Editor |
| Directing | Kenneth G. Crane | Director |
| Camera | David Mason | Director of Photography |
| Directing | Dan Takahashi | Assistant Director |
