A/N: I just felt like writing crackfic, so I got the prompt: Vengeance for a Crime plus Aliens plus Ninjas. And here is what came out: total crack.

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Aliens vs. Ninjas

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"I just wanted to tell you that I know why you did it and I forgive you," Harry told Voldemort. "I know that what we did was reprehensible and I understand why you acted out like that."

"What are you talking about?" Voldemort demanded. This was the last thing that he had expected when he had finally captured the Boy-Who-Lived.

"My people committed a horrible crime when we imprisoned your people at Roswell," Harry shook his head, looking mournfully at the ground. "Of course you had to retaliate in vengeance."

"My people? Roswell?" Voldemort questioned, totally confused.

"I have figured everything out. You, Voldemort, are an alien," Harry shouted as he pointed at the Dark Lord. He smirked as he reached into a pouch at his side. "Unfortunately for you, I am an ninja and this has gone far enough."

Harry threw down a smoke bomb and when the smoke cleared, he was nowhere to be found. Voldemort whirled around, his wand at the ready. His Death Eaters were also searching for the Boy-Who-Lived, even without the shouted order.

Out of nowhere, a blade flew through the air and buried itself into Voldemort's skull. Blood splattered everywhere and the cowards fled as Voldemort's body dropped to the ground. In a split second, Harry appeared at Voldemort's head and pulled his dagger out, holding it up so that people could see the blood drip off of the blade.

"Voldemort is dead; anyone else care to take me on?" Harry asked. The rest of the Death Eaters disappeared, not wanting to risk imprisonment. Besides, aliens couldn't be purebloods: they were the very opposite of purebloods!

"Ninjas win again." Harry smirked before he set Voldemort's body on fire. There was one less alien disturbing the peaceful Earth, all thanks to Harry Potter.