RIZIN 18 live from the Dolphins Arena in Nagoya, Japan. In the evening’s main event, former UFC title challenger and current Rizin and Bellator champion Kyoji Horiguchi takes on rising star Kai Asakura. The co-main event pits the promotion’s women’s super atomweight titleholder Ayaka Hamasaki against Thailand’s Suwanan Boonsorn in a non-title affair.
| Actor | Role |
|---|---|
 Kyoji HoriguchiNot listed | Not listed |
 Kai AsakuraNot listed | Not listed |
 Ayaka HamasakiNot listed | Not listed |
| SSuwanan BoonsornNot listed | Not listed |
 Victor HenryNot listed | Not listed |
| TTrent GirdhamNot listed | Not listed |
 Manel KapeNot listed | Not listed |
 Takeya MizugakiNot listed | Not listed |
| DDanilo ZanoliniNot listed | Not listed |
 John Wayne ParrNot listed | Not listed |
| KKanna AsakuraNot listed | Not listed |
 Alesha ZappitellaNot listed | Not listed |
| HHaruo OchiNot listed | Not listed |
 Jarred BrooksNot listed | Not listed |
| HHiroto UesakoNot listed | Not listed |
 Yves LanduNot listed | Not listed |
| JJustin ScogginsNot listed | Not listed |
| KKazuma SoneNot listed | Not listed |
| TTakaki SoyaNot listed | Not listed |
| YYutaro MuramotoNot listed | Not listed |
| AAi ShimizuNot listed | Not listed |
| TTabatha Ann WatkinsNot listed | Not listed |
| KKazuki OsakiNot listed | Not listed |
| SShota TakiyaNot listed | Not listed |
| RRyuji HorioNot listed | Not listed |
| UUchu SakuraiNot listed | Not listed |