Ep. 13: White Steel Fang
Aired on December 17, 2002

The Zeravire receive orders to eradicate humanity, evolving rapidly to counter Gravion. While the Earth Federation Alliance unveils a large robot, Sandman initially denies dispatching Gravion due to the enemy's specific adaptations. After the Graviton Breaker fails to defeat the Zeravire, Sandman approves the mission. During the ensuing battle, the White Steel Fang arrives to deflect an attack. Gravion wields this Super Heavyweight Sword, executing the Super Heavyweight Slash technique to destroy the Zeravire. The episode concludes with Ayaka emerging from a body of water at the castle.
Episodes
- Ep. 9 · Mizuki and Eiji investigate the gravity-manipulating West Tower and Ayaka's mysterious disappearance.
- Ep. 10 · Zeravire threatens city with theta rays while Eiji rescues Cecile from its grasp.
- Ep. 11 · Eiji refuses to return while Toga struggles with his humanity as Zeravire attack Earth
- Ep. 12 · Eiji and Leele split forces to defeat three Zeravire and restore communication
- Ep. 13 · White Steel Fang