Fabia Sheen

She is the sister of Queen Serena, the Neathian Queen. Fabia's reason for brawling is to save her planet from the Gundalians. 

She seems to have some kind of Mira's initiative and love for freedom. She also seems to be strong, because she threw Dan twice in episode 3, the first was by accident and the second was when she got mad at Dan after losing and in episode 10 when Zenet tried to take her as a hostage and Fabia threw her hard on the ground. Those incidents may prove Ren Krawler's statement about the Neathians' specialty at close combat, although most of what Ren said was a lie to put down the Neathians.