The second night of G1 Climax 30 took place on September 20, 2020 at EDION Arena Osaka in Osaka, Japan and was headlined by Hiroshi Tanahashi vs. Tetsuya Naito.
| Actor | Role |
|---|---|
 Hiroshi TanahashiHiroshi Tanahashi | Hiroshi Tanahashi |
 Tetsuya NaitoTetsuya Naito | Tetsuya Naito |
 Luke James Uggles EatwellZack Saber Jr. | Zack Saber Jr. |
 Takaaki WatanabeEVIL | EVIL |
 Hirooki GotoHirooki Goto | Hirooki Goto |
 Kenta KobayashiKENTA | KENTA |
 Toru YanoToru Yano | Toru Yano |
 Seiya SanadaSANADA | SANADA |
 Joseph RobinsonJuice Robinson | Juice Robinson |
 Nobuo YoshihashiYOSHI-HASHI | YOSHI-HASHI |
 Yota TsujiYota Tsuji | Yota Tsuji |
 Gabriel McMenaminGabriel Kidd | Gabriel Kidd |