#1: Youko from Inukami!
The green-haired girl stood defiantly on the bench, a sneer in her eyes, pointing an accusatory finger at the large, bulky boy who was now laying on his stomach at Professor Snape's feet. Wisps of smoke rose from his charred blonde hair and singed robes, and large pieces of broken glass lay littered about his head.
"He tried to jinx me first, Professor!" Youko protested loudly. Then, she turned to face her fellow Potions students, many of which have now gathered around for a closer look and were murmuring to each other. "You've all seen it. Crabbe tried to attack me - because he asked me out and just wouldn't take no for an answer. And for your information, I already have someone and, as his inukami, I am loyal to him and won't even look at another guy!"
The expression on the sallow-eyed professor's face remain unchanged. "Admirable as your loyalty may be, Miss Youko, you know very well that it is highly dishonorable for fellow Slytherins to fight amongst themselves. Especially in my classroom. And especially by setting said fellow Slytherin on fire and dropping a large and highly expensive flask on his head. What is more, your particular brand of magic falls outside of what we normally strive to teach at Hogwarts. Therefore, you and Mr. Crabbe shall spend the lovely hours of this weekend in a private dungeon, arranged just for you, so you can, well, "work out" any differences that you may have..."
Youko's face blazed with rage. "YOU...!!!" With a touch of her foot, she rose twelve feet into the air, remaining there effortlessly, and it seemed that bolts of rage flashed from her eyes. Her face became elongated, furry, and sharp fangs sprouted in her mouth. "YOU...just don't like me...because I'm an inukami!"
She raised an arm. "DAI JAEN!!!!"
Streams of fire hurtled downwards. Professor Snape barely managed to raise a protective barrier around himself in the nick of time, and when the flames subsided...The classroom was filled with the scent of singed hair and burnt herbs. A few students poked their heads out from behind the class benches, their hair and robes as badly singed as Crabbe's had been.
"Hmph! It's hardly worth staying here!" And with that remark, Youko landed by the door, turned the knob, and walked out.
Behind a bench at the very back of the classroom, two singed heads, one black-haired and one red, poked out hesitantly.
"Maybe this means Snape will let us off early," Harry Potter mumbled.
"Yeah, I hope so," his friend Ron whispered back. "You know, that Youko sure is something. Although I must say I wouldn't want to go out with her personally - Five minutes with that girl would literally be murder."
Fingering a strand of his messy black hair, still smoking from a singed end, Harry couldn't do anything except nod.