Rizin World Grand Prix 2015: Part 1 - Saraba was an inaugural mixed martial arts event held by the Rizin Fighting Federation on December 29, 2015 at the Saitama Super Arena in Saitama, Japan .
| Actor | Role |
|---|---|
 Shinya AokiNot listed | Not listed |
 Kazushi SakurabaNot listed | Not listed |
 Jiří ProcházkaNot listed | Not listed |
 Satoshi IshiiNot listed | Not listed |
 Vadim NemkovNot listed | Not listed |
 Goran ReljicNot listed | Not listed |
| TTeodoras AukštuolisNot listed | Not listed |
 Bruno CappelozzaNot listed | Not listed |
 Muhammed LawalKing Mo | King Mo |
| BBrett McDermottNot listed | Not listed |
 Valentin MoldavskyNot listed | Not listed |
| YYuta UchidaNot listed | Not listed |
 Hiroyuki TakayaNot listed | Not listed |
| DDaiki HataNot listed | Not listed |
| HHideo TokoroNot listed | Not listed |
| KKizaemon SaigaNot listed | Not listed |
 Anatoly TokovNot listed | Not listed |
| AA.J. MatthewsNot listed | Not listed |
| HHinata WatanabeNot listed | Not listed |
| KKazuyuki MiyataNot listed | Not listed |
| HHiroya KawabeNot listed | Not listed |
| AAkiyo NishiuraNot listed | Not listed |
| YYuki MotoyaNot listed | Not listed |
| FFelipe EfrainNot listed | Not listed |
| KKirill SidelnikovNot listed | Not listed |
| CCarlos ToyotaNot listed | Not listed |
 Tsuyoshi KosakaNot listed | Not listed |
 James ThompsonNot listed | Not listed |