"The Underground Battle Emperor, Kurtz!" (地下バトル皇帝クルッ！, Chika Batoru Kōtei Kurutsu!) is the thirty-ninth episode of the Beyblade Burst Evolution season. It first aired on December 25th, 2017.
- Kurtz Baratier and Norman Tarver are revealed to be the two mystery bladers that have qualified for the God Blader's Cup.
- The God Blader's Cup is divided into two groups: Group A and Group B, with Group A consisting of Valt, Cuza, Kurtz, Boa, Norman, and Shu; and Group B consisting of Free, Lui, Xander, Ren Wu, Joshua, and Silas.
- Valt Aoi
- Carl (Cuza's Bird)
- Cuza Ackermann
- Rickson Clay
- Honey Guten
- Free de la Hoya
- Kitt Lopez
- Shasa Guten
- Rantaro Kiyama
- Silas Karlisle
- Christina Kuroda
- Kurtz Baratier
- Xander Shakadera
- Ren Wu Sun
- Shu Kurenai (Red Eye)
- Lui Shirasagi
- Joshua Burns
- Boa Alcacer
- Theodore Glass
- Norman Tarver
- Khalazar K3 7Under Hunter (Kurtz's)
- Roktavor R3 4Cross Flugel (Rantaro's)
- Genesis Valtryek V3 6Vortex Reboot (Valt's)
- Spryzen Requiem S3 0 Zeta (Shu's)
- Kurtz Baratier (Khalazar K3 7Under Hunter) vs. 5 Unknown Bladers (Unknown Beys) = Kurtz & Khalazar
- Round 1: Kurtz & Khalazar (5 Burst Finishes)
- Rantaro Kiyama (Roktavor R3 4Cross Flugel) vs. Kurtz Baratier (Khalazar K3 7Under Hunter) = Kurtz & Khalazar
- Round 1: Kurtz & Khalazar (Burst Finish)
- Shu Kurenai (Spryzen Requiem S3 0 Zeta) vs. Ajiru, Rizumo, and 3 Unknown Bladers (Unknown Beys) = Shu & Spryzen
- Round 1: Shu & Spryzen (5 Burst Finishes)
Special Moves Used
- This episode aired in Japan on Christmas Day, 2017.
- Group B of the God Blader's Cup consists of all members of the Big 5, with Silas being the only non member.