RIZIN 13 will be the promotions biggest event to date from the Saitama Super Arena in Saitama, Japan. Following the tragic loss of Norifumi “Kid” Yamamoto this month, two generational talents from their respective combat sports will compete in a clash featuring two of Japan’s best. Yamamoto’s protege Kyoji Horiguchi will strap on the big gloves when he crosses over into kickboxing to take on undefeated 20-year-old phenom Tenshin Nasukawa. In addition to the headliner, Mirko Cro Cop returns against streaking heavyweight Roque Martinez, former Invicta FC atomweight champ Ayaka Hamasaki meets DEEP titleholder Mina Kurobe, and former UFC fighters Diego Brandão and Daron Cruickshank will clash at lightweight.
| Actor | Role |
|---|---|
 Kyoji HoriguchiNot listed | Not listed |
 Tenshin NasukawaNot listed | Not listed |
 Jiří ProcházkaNot listed | Not listed |
| JJake HeunNot listed | Not listed |
 Mikuru AsakuraNot listed | Not listed |
| KKarshyga DautbekNot listed | Not listed |
 Daron CruickshankNot listed | Not listed |
 Diego BrandaoNot listed | Not listed |
 Miyuu YamamotoNot listed | Not listed |
| AAndy NguyenNot listed | Not listed |
 Mirko FilipovićMirko Cro Cop | Mirko Cro Cop |
| RRoque MartinezNot listed | Not listed |
 Bob SappNot listed | Not listed |
| KKintaro OsunaarashiNot listed | Not listed |
| HHaruo OchiNot listed | Not listed |
| MMitsuhisa SunabeNot listed | Not listed |
 Kai AsakuraNot listed | Not listed |
| TTopnoi KiwramNot listed | Not listed |
 Ayaka HamasakiNot listed | Not listed |
| MMina KurobeNot listed | Not listed |
| TTaiga KawabeNot listed | Not listed |
| KKento HaraguchiNot listed | Not listed |
 Manel KapeNot listed | Not listed |
| YYusaku NakamuraNot listed | Not listed |