Harry stood alone before Voldemort.
He was prepared for the fight against the snake as he had realized the truth, realized what the power was that Voldemort would never know. He'd realized that the dark lord would never be able to understand the true power he was unleashing, the power gained to him as an Animagus.
He closed his eyes and focused as the bright lights of the brother wands broke amidst the battlefield. Bodies of the friends and allies he'd gained in his quest touched him, filled his hart with rage and anger, the raw power of what he would do.
Focus, it was what was needed, focus or he could lose control and devistate everything, and now he no longer cared.
Tom Riddle staggered backwards as the Potter boys flesh darkened and hardened while growing larger, Rows of plates rose from his back as an almost serpentine face formed, but more like a dragons than a snakes. The man turned monster realized he was in trouble as the behemoth before him began to dwarf the muggle ruins of the battlefield in London.
His magic wasn't responding correctly as he tried in vain to apparate away as his followers fled in panic as an ear splitting and glass shattering roar resounded off the buildings as the green-black scaled leviathan stood as a skyscraper before him.
The man turned monster could not stand up to the King of the Monsters, the ultimate creation of mankind stood before him with vengance burning in his eyes.
"I think we need a bigger box," he managed to stammer before a wave of bright blue radioactive energy vaporized his forces as Godzilla raged through the remains of London.
AN: I've been thinking about the prophecy and decided to throw a few of my ideas on what the power could be out there. And yes, Harry having Godzilla as his animagus form was something that came up.