An evolution of the Percival line of Bakugan. Geshumaru uses his cape to shield himself from the most powerful attacks. Geshumaru gathers energy from the air around him to fire plasma bullets that shoot from his roaring mouth, and tear through his enemies' armor. He conjures the strength of a hurricane storm to blow his opponents away.
Geshumaru's personality is like that of Firestormblaze's Bakugan before him. He is cocky even to the point of underestimating humans, as when he meets Firestormblaze for the first time, he states, "...Get out of the way human, this is between powerful beings," and after Firestormblaze helps him win, he accepts that humans can be powerful too (even though Firestormblaze is half demon).
Geshumaru never appeared in Bakugan Dimensions, due to his late appearance. If he had, however, he most likely would have exceeded 600 Gs and replaced Rick Roll as the main trainee under Pyro and S.G..