RIZIN 28 will mark RIZIN's first event at the Tokyo Dome in Tokyo, Japan. Undefeated kickboxing star Tenshin Nasukawa will fight one bout against three separate opponents and the bantamweight grand prix will get underway, all at RIZIN 28. The show also features a featherweight contest between Mikura Asakura and Kleber Koike Erbst and a clash for the vacant Rizin lightweight world title between Tofiq Musayev and Roberto de Souza.
| Actor | Role |
|---|---|
 Mikuru AsakuraNot listed | Not listed |
 Kleber KoikeNot listed | Not listed |
 Tenshin NasukawaNot listed | Not listed |
| HHideo TokoroNot listed | Not listed |
| HHiroya KawabeNot listed | Not listed |
| KKoki OsakiNot listed | Not listed |
 Roberto de SouzaNot listed | Not listed |
 Tofiq MusayevNot listed | Not listed |
 Kai AsakuraNot listed | Not listed |
| SShooto WatanabeNot listed | Not listed |
 Naoki InoueNot listed | Not listed |
| SShintaro IshiwatariNot listed | Not listed |
| HHiromasa OugikuboNot listed | Not listed |
| TTakeshi KasugaiNot listed | Not listed |
| YYuki MotoyaNot listed | Not listed |
| RRyo OkadaNot listed | Not listed |
| YYutaka SaitoNot listed | Not listed |
| VVugar KaramovNot listed | Not listed |
| SShoma ShibisaiNot listed | Not listed |
 Tsuyoshi KamiyamaTsuyoshi Sudario | Tsuyoshi Sudario |
| SSatoshi YamasuNot listed | Not listed |
| NNoah BeyBeynoah | Beynoah |