Ninja
The ninja (also known as the Masters of Spinjitzu [ 2 ] ) are a team of warriors, mostly Elemental Masters , that were trained in the art of Spinjitzu by Master Wu . They were formed around a time when the youngest son of the First Spinjitzu Master realized he could no longer defend his father's world alone, and thus assembled the chosen ones destined to protect the land of Ninjago , and later the Merged Lands . . The original iteration initially composed of Cole , Zane , Jay and Kai , led by Wu. Later on, they were joined by the fabled Green Ninja of prophecy, Lloyd , and Kai's younger sister, Nya , who originally aided the ninja as Samurai X , and later became the Elemental Master of Water , with the mantle of Samurai X being later adopted by Nindroid ally and member P.I.X.A.L. . Over time, the teenage heroes grew from children into mature young adults, discovered their origins, unlocked their True Potentials , faced menacing villains, and some even found true love. . After a cataclysmic event known as the Merge scattered the original ninja and their closest allies across the Merged Lands, Lloyd took on a new generation of young ninja in Arin , Sora , Riyu , and Wyldfyre , whilst gradually reuniting with the other ninja. More young Elemental Masters would join following the ninja's many adventures; Frak , the Master of Quake , joined following the most recent Tournament of th