Zoids: Genesis 2005 one on netflix: 1x8

Underground Waterway

The group leave for the village of Sakusa to find a Zoid mechanic, who is a friend of Ron’s. However, they are forced to turn back after Rainbow Jerk runs out of Reggel. The city has been taken over by Digald forces, so Ruuji sneaks in and meets up with Haara. They form a plan to take Reggel from the Generator without Digald catching them. Garaga and Ra Kan distract the Bio-Raptor guards, and Ruuji retrieves the Reggel, but he is spotted by Zairin, and the Mega-Raptor leads a counter-attack against them.