"In one months time, Hogwarts will be hosting the Triwizard Masquerade," Dumbledore announced to the collected school before tea. "Since you will be expected to create your own costume, you are receiving a month's warning."

"Create our costume?" Ron said, horrified. "I can't do that!"

"Are you a wizard or are you not, Mister Weasley?" McGonagall asked rhetorically. "Points will be given to students for creativity and spellwork."

"To add to this," Dumbledore continued, "students may approach Professor Flitwick for aid with glamour, Professor McGonagall for help with transfiguration, or Professor Snape for more liquid assistance."

"If," Snape said curtly, and not quite under his breath, "they are braver and stupider than /most/ students here."

"Now, let tea begin," Dumbledore beamed.

"Didn't you hear Professor McGonagall, Harry?" Hermione asked. "I'm sure we could win first place! You're great with your transfigurations, even if Defense is your best subject, and I'm excellent with charm work."

"You're not too shabby at Potions, either," Harry pointed out. "Even if Snape won't admit it."

"I... think I might have an idea," Hermione said slowly. "Wait here!"

Harry patiently waited in the corner of the Common Room, while Hermione darted up the stairs to the girls' dormitories. She returned with some heavy books.

"How did you get this from the Restricted Section?" Harry asked, picking up 'Most Potente Potions'.

"Oh, I got it second hand from a little shop," Hermione said absently, flicking through a slim book titled 'Potion Reactivity Tables And Catalysts'. "Here, go to the Polyjuice page, Harry."

He did so, and she laid down her book of reaction tables next to it, comparing something. "Hmmm."

"Hmm?" Harry asked. "What does 'Hmmm' mean?"

"Hold on," she said absently, flicking through 'Most Potente' and looking through a page on the Animagus Potion.

"Well," Hermione said, sitting back. "The timing will be tight, and we'll have to start tonight, but I think we could do it."

"Do what?" Harry asked.

"Go as dragon people," Hermione said, with a touch of smugness. "I bet that no one else could do this."

The Great Hall fell silent as the Boy Who Lived and his companion walked in.

Harry was dressed in black and red robes, with four inch long horns reaching through the fringe of his hair, five of them equally spaced from just in front of each ear to the center of his forehead. One was slightly cracked, and discoloured, where his famous scar crossed it. His eyes were burning red, and an almost visible aura of heavy power surrounded him, suggesting to even the youngest students the power of continental shift, of Mount Etna, of the heavy core of the planet.

Hermione was more visually centered, as huge, thick long horns reached back from just above her ears, sweeping behind her, with two smaller horns just below those. She'd put golden bands around them for decoration. Her hair was restrained with golden hairbands, attached to the bands on her horns. Her eyes were whitely fuming, suggesting the purity of creation. The pureblood students were mildly outraged by her clothes - while her skirt reached to the floor, her blouse could best be described as an elaborate bikini.

"I think we've found our winners," Dumbledore said quietly, into the silence.

"Er... dispell?" Hermione asked, after the masquerade ball was over. "Ummm..."

"I thought these were supposed to be modified animagus forms," Harry said.

"Oh, they are," Hermione said absently. "I guess the dragonblood from the Hebridean Black and Uncommon Welsh Red must have interacted more than I projected."

"Stupid, foolish girl!" Snape roared. "Fetch your notes here at once!"

A/N

Idea occured to me at work. Yes, they're modelled after Alexstrasza and Deathwing (Neltharion) from World of Warcraft.

I'm not sure where this would go, other than the pair of them not really being able to go out much in muggle public without SOMETHING to hide their externally identifying features, and even then normal people are going to notice SOMETHING strange and fearful.