Her mech is a robotic spider - like mech known as the Water Strider .
Nya ( voiced by Abbi Jacobson ) is the strong - willed , confident and motivated Ninja of Water and sister of Kai .
sister 's mech is a robotic spider - like mech known as the Water Strider .
Nya ( voiced by Abbi Jacobson ) is the strong - willed , confident and motivated Ninja of Water and sister of Kai .