Nya is Kai's Sister and is Samurai X. Nya also is revealed to have a split heart between Jay and Cole
Nya as Samurai X[]
Main article: Samurai X
Samurai X is atfirst the unknown rival of the Ninja. "He" always captured the Serpentine threats before the Ninja could think to stop them.
Nya as Kai's Sister[]
Nya is a sweethearted and competitive girl. In the first episode, the Skulkin attack Ignacia, where they lived, Kai told her to stay back, but she refused. She wants to be involved.