Lavarock the Nightwing has an enchanted necklace that allows her to shapeshift into any of the tribes that she has met before. However, in her Rainwing form, she seems to change sides. Jaguar is evil while Lavarock is good. She shows up near the end of the series, although does play a part in later seasons. Try to use a slightly different voice for the two characters, just for a little depth.