Sena

Sena is one of the main protagonists of Tai Chi Chasers, a member of the Tigeroid race and leader of the Tai Chi Chasers. She's from a family of Tigeroid warriors and she struggles to measure up to with her sisters extraordinary accomplishments. She is a kind and strong leader, caring very much for every one of her friends, though she can become angry when her teammates goof off instead of focusing on their assignment of finding the Tai Chi symbols or jobs around the ship.

Her Tai Chi skills include the Cheon (Water) and Am (Darkness) Tai Chi attacks.

(Source: Wikia)