What about a Ninja-Pirate? Why has no-one considered creating one? Could ANYONE defeat one?

Agent Proto was walking home after cheerleading practice. Many of the football team had tried to hit on him, and he liked this, but he just wasn't that kind of girl. Boy. Thing. Whatever. Anywho, he was SURE something was following him. He had seen shadows, unformed shapes...maybe it was just a cat. All of a sudden, an incredible "AAAAARRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRR!" shattered the peace, and a cutlass was thrust into Agent Proto's neck! "You have dishonoured my honour, now I come for ye booty!" Said a figure clad in black, but with an eye patch, pirate hat and a wooden leg. Also a parrot. Named Unne. But he was dead. And then Trogdor smote the Kerrek, and all was laid to burnination...

Based on a true story.