Sometimes ninjas gotta infiltrate the Arctic, that's why we have the Boys Arctic Ninja Costume. It says, "I will hunt you down to the ends of the earth with my deadly shadow arts and not only will I follow you to a snow-blasted tundra, I will relish the opportunity." Brevity might be the soul of wit, but that very specific threat is still pretty frightening. Ninjas ain't nothing to mess with.
Ninja are pretty great, that's why we've got the Boys Arctic Ninja Costume, which is also pretty darn snazzy. If you like martial arts and or any more of ninjitsu, then this is the Halloween costume for you. After all, those rival ninjas aren't going to be defeated and shamed without a warrior like this on the prowl.