[flyteck]

I threw everything you said into it c: His other side is light blue, and the writing is black.

Writing means:
On Forehead: Karate
On Sides: I am the ninja (X3)
On Sword: Samurai

His Tails are prehensile and his ninja mask is black on the far side.

Eyes are based on this: I think it's how to read Japanese but whatever X3

Hope you like it ^^