Kuvira

Kuvira (voiced by Zelda Williams) is a master metalbender who served as political and military leader of the Earth Kingdom and the Earth Empire between 171 and 174 AG. Before her rise to power, she was a prominent member of the Metal Clan, serving as both the captain of the guard in Zaofu and part of Suyin Beifong's dance troupe. Following the outbreak of anarchy in the Earth Kingdom upon Earth Queen Hou-Ting's assassination by Aveline de Grandpré, Kuvira left the Metal Clan and became an assassin along with Aveline and Connor Kenway. For the next three years, she was engaged to Proteus in order to become princess of Syracuse. In her pursuit of order, Kuvira offered to protect the nation's states from Templars in exchange for their loyalty to the Avatar and the Dragon Warrior. During Tsung Lai and Apollyon's return from their grave, Kuvira was willing to support Korra and Po through and through. She was also engaged to Proteus and was given the royal blessing to her by his father, King Dymas.