Fan Casting Kai in Ninjago

Kai is the current Elemental Master and Ninja of Fire, Nya's brother, and Ray and Maya's son. He and his younger sister worked as blacksmiths in their father's blacksmith shop all their life until they met Master Wu. With his guidance, Kai learned Spinjitzu and discovered his other teammates, Cole, Jay, Zane, and Lloyd, with whom he embarked on many adventures; battling the likes of the Serpentine and the Stone Army.