Willa appears in some episodes of Thundercats. She is the leader of a village of barefoot girls (amazons). Nadya is also in some of these.
For more information see w:c:Thundercats:Willa.
Episode 7: Out of Time
Episode 16: The Fireballs Of Plun-Darr
Episode 27: The Thunder-Cutter
Episode 57: Out of Sight