Angry Ninja once was whole but when evil knife cut him in half he lost his better half to a guacamole. Since that day he devoted his life to the art of fight: AvoCa-Do, to restore his wholeness. 
For a very long time Angry Ninja was hiding using his special and very effective training called Asparagus. Finally he came out of the shadows and lucky for us he was seen recently on the streets of Cupertino surfing, drinking and even relieving himself on iMessages of your so-called friends.
Enjoy this character while he is out of the shadows. Behold the way of AvoCa-Do.