Kuro

Keita's partner. As a child, she was princess of the Tera Guardians. However, tragedy met up with her when her most cherished brother slaughtered her whole tribe. She came to the human world to stop him. Her manga version fights using boxing, having learned it from a former professional boxer, while her anime version does not have any particular style. Both, however, use an Exceed which massively increases her offensive power. In the anime, her exceed is the Mega-exe, though in episode 16 it changes to Giga-exe when Keita and Kuro connect their Tera to become one.