Niobe

Daugher of Jurt and Julia Barnes

You could call her stubborn. You could just as easily call her fearless or insane. She cruises through Shadow with a Broken Pattern imprint and argues with any Amberite unlucky enough to shift into the same location as her. And when she's not doing that, she's running around either Amber, Chaos, or Kashfa with Alice and Caitlin, playing pranks on relatives.
On the other hand, she is third (or second, depending on Despil) in line for the throne of Chaos. She's a shapeshifter and a Logrus wielder. And she's got Merlin wrapped around her little finger (and Frakir around one wrist).