kai(smith)Walker jay Walker Jay and kai were working on some new inventations when sensei wu came walking in. after insulting their inventions and many smacks on the head. ( Jay getting hit by kai .) that's when some misteriouse people attacked. Jay- 18 years /6'1 / lightning ninja/older than kai Cole- 19 years / 6'3/ earth ninja Zane- 19 years / 6'3 / Ice ninja nya- 18 years / 6'1 / fire ninja lloyd- 17 years /6'0/green ninja kai- 16 years /5'4/ no powers yet/younger than jay