In GI Joe what fighting style do snake eyes and storm shadow train in?

In G.I. Joe, Snake Eyes and Storm Shadow train in a Martial Arts style known as Arashikage, which is a fictional ninjutsu style. This training encompasses various techniques, including stealth, agility, and weapon proficiency, reflecting their backgrounds as ninjas. The rivalry and bond between the two characters are often highlighted through their shared mastery of this style.