Harry's Animagus form… is not what would be expected of the Boy-Who-Lived. However, appearances can be deceiving… (set after OotP)
Disclaimer: Don't own Harry Potter or anything from Monty Python.
--
"I, uh, know you're a little... disappointed, Harry..."
"Bloody hell!" Harry said as he transformed back. "What's everyone going to think? I can't just go up to Voldemort and transform and kill him like that! What am I going to do, nibble on him?'
"We've already tried everything else, my boy. This is your secret power, the 'power he knows not,'" said Dumbledore, his eyes twinkling. They had tried everything else: wandless magic, elemental magic, even Tae-bo. It had been very discouraging. And here was Harry's "secret power": being an Animagus.
Dumbledore watched as Harry stormed out of his office, just like he had done every week for all of sixth year. They had thought that Harry would be powerful. Dumbledore knew there was a problem. Every obscure Seer had predicted that Harry would be the most powerful wizard in all of history, and hot to boot. So why… why this?
I need a drink, Dumbledore thought.
--
However, appearances can be deceiving…
--
"Harry, Harry, Harry. I must say, I'm disappointed." Lord Voldemort faked a look of pity, and then sneered at him. "No special powers or anything to defeat me? Well, it is no matter. You will die today."
"I'm not finished," snarled Harry. "Just watch!" He transformed.
Suddenly, all the Death Eaters were doubled over in laughter. Even Voldemort looked ready to crack up, but he, being more dignified, restrained himself.
Then, a white blur shot up with a hiss and sunk its teeth into Bellatrix. She screamed, but very soon, she was dead.
Panic and chaos ensued. All of the Death Eaters were killed, and only Voldemort was left.
He looked around frantically for an exit. Stupidly, he had placed anti-Apparition and anti-Portkey wards around the immediate area, so there was no escape. He knew he was facing his death. He tried one more time to bargain with the short menace in front of him.
He held up the peace sign. "Truce?"
Less then ten seconds later, Voldemort was dead. A white bunny stood triumphantly above him.
Harry transformed back. "Mwa ha ha… Don't underestimate the power of BUNNIES!!"
--
Kind of rushed at the end, but what the heck…