Ren Crawler

Ren Crawler is the new emperor of Gundalia. After the defeat of Berodius, Ren was put on the task of rebuilding gundalia to a peacefull place. But with the escape of Kazarina, who put him up to evil again, he secretly prepared the destruction of the brawlers. He ordered Kazarina to build a machine, which could alter the DNA code of a person or bakugan. With this device, he can turn everyone in a gundalian servant. The first person to test the machine was Dan Kuso, who was kidnapped in his sleep and put in a capsule. Shun came to Dans aid, but was too late and was thrown in a capsule too.

Because Shun was the one who always distrusted him, Ren ordered that Shun should be one of his most loyal servants. Kazarina followed the order and programmed shuns DNA in such a way, he became convinced that the new emperor was his savior. For that and his battling skills, shun became head of the Gundalian Castle Knights.

After Ren became emperor, he gave Linehalt to Kazarina, because Linehalt was too weak in his eyes. Kazarina started experimenting on Linehalt to learn more about the forbidden powers. In one of the experiments she accidently created the silent orb: a sphere full of negative energy. She soon learned she could use this to power up bakugan. The first try was with Drago, who evolved in Darkus Dragonoid. After that, she combined the power of the sacred and the silent orb to create Rens new bakugan: Darkus Doombeing.