Nindroids are highly (artificially) intelligent humanoid robots with unbelievably strong programmed fighting skills from Ninjago. While most of the Nindroids were created by the Overlord and are
evil, there are some exceptions. The most notable is Zane, the Master of
Ice and the sweetest
Ninja on Sensei Wu's team. The
evil Nindroid's design was based on Zane's. The other exceptions include Cyrus Borg's security droids and Echo Zane. But any of them could simply be reprogrammed.