To be an assassin, you need to be one with your weapons. To be a ninja, you must BE a weapon. To be a ninja assassin you must be one with yourself. And to be a Robot Ninja Assassin, you just need this hoodie.
There are all sorts of crazy crazies to meet on Pandora. From Mad Moxxi to Sir Hammerlock to Tiny Tina to all the wackos you have to blow up - you just have to be insane to stay on Pandora. Really, with the varkids alone.... Anywho, one of the awesome characters you can play in Borderlands 2 is Zer0 the Assassin. Though this hoodie will allow you to dress like the robot ninja, you won't instantly have his skills (you'll need to smash piles of poop and stuff to find Class Mods, first). In the immortal words of Zer0 (which we are right now making up):
Smashing poop yields loot.
Loot powers up the weapons.
Shoot the world's face off.
Zer0 design on a black and grey, 60% cotton / 40 polyester zip-up hoodie. This hoodie also features: blizzard neck collar, embroidered Assassin Zer0 patch on left chest, headphone eyelets in both pockets, thumb holes on cuffs, Vault icon embroidered on back right & shoulder, and a molded red Vault icon zipper pull. Machine wash cold. Tumble dry low or lay flat to dry. Imported.