P.I.X.A.L. is an acronym for Primary Interactive X-ternal Assistant
Life-form. When the Ninja visit Borg Tower, they meet P.I.X.A.L., who is
Borg’s android assistant (it took 16 versions for Borg to create the
P.I.X.A.L. we know today). She was briefly taken over by the Digital
Overlord, during which time she helped to manufacture an army of
Nindroids based on Zane’s design. From the beginning, there was mutual
fascination between her and Zane, as they shared similarities as well as
differences. Badly damaged after a battle at the Storm Farm, P.I.X.A.L.
was saved when Zane shared half his power core with her – his heart,
you might say. From then on, she became an ally of the Ninja and very
close to Zane.
Credit to LEGO.com for this short description.