Granutes are intelligent lifeforms that operate secretly in the human world. They kidnap people for the sake of "Black Market Sweets." As people are attacked one after another by the Granutes, Shoma, a young man from another world, rises up to save the people. Together with the Gochizo, small monsters born from eating sweets, he transforms into Kamen Rider Gavv with a mouth-like belt!
| Writing | Junko Komura | Series Composition |
| Sound | Sekai Yamamoto | Theme Song Performance |
| Directing | Teruaki Sugihara | Series Director |
| Production | Keisuke Shibataka | Producer |
| Production | Naomi Takebe | Producer |
| Production | Minami Takijima | Producer |
| Sound | Go Sakabe | Music |
| Sound | Taiki Sato | Theme Song Performance |
| Sound | Natsuki Sawamoto | Theme Song Performance |
| Sound | Leiya Seguchi | Theme Song Performance |
| Sound | Natsuki Hori | Theme Song Performance |
| Sound | Keito Kimura | Theme Song Performance |
| Sound | Yusei Yagi | Theme Song Performance |
| Sound | Sota Nakajima | Theme Song Performance |
| Visual Effects | Hiroshi Butsuda | Special Effects Supervisor |
| Directing | Satoshi Fujita | Action Director |
| Visual Effects | Tamotsu Shinohara | Creature Design |
| Visual Effects | Keisuke Hattori | Character Designer |
| Visual Effects | Shoma Muto | Creature Design |
| Production | Takehiro Okawa | Executive Producer |
| Writing | Shotaro Ishinomori | Original Series Creator |
