G.I. Joe Sigma Six ep10: "War"
 

"War"

It's Ninja versus Ninja in this episode. A Power Stone is discovered in a temple on Mount Arashikage and Storm Shadow goes to collect. A massive battle ensues as Snake Eyes takes on his sworn enemy and blood brother Storm Shadow for possession of the Stone. Meanwhile, Jinx and Kamakura show the Dreadnaughts that it's not good to tangle with a deadly dup of Ninjas!