Red Ninja. It could be that I just never found Renegades Storm Shadow and didn't realize what an amazing sculpt Hasbro had come up with, but I ended up getting a few of them and loved how well they posed. With the accessories from the Ninja Shodown set I had an instant Arashikage army, and finally found myself interested in the martial arts aspect of the GI Joe universe. Slice was an obvious choice for a quick custom to add a leader to the group, and I stuck pretty close to the original look with a few added accessories.
I see what's left of the Arashikage clan working as mercenaries along side COBRA's own "in-house" martial artists, with Slice being the de facto leader of the Red Ninjas.
Red Ninja - Base Figure
Ninja Showdown Red Ninja - Mask and Sugegasa
GI Joe Trooper - Cloak