Sixth Year Pansy Parkinson

The first thing Harry feels when he wakes up in grogginess and a stiff neck from being on the floor, as he tries to stand up a familiar voice says, "Kneel," and while his mind says otherwise, his body obeys the command.

After trying to stand up, Harry goes to shout, "What ar-" before he's interrupted by the same voice, telling him, "Be quite Potter."

Using his hands to wipe the sleep and dust from the floor from his eyes, Harry is finally able to see his fellow sixth year Slytherin classmate Pansy Parkinson standing in front of him with a smug look on her face.

After Harry tries to both stand and talk without any results for half a minute, Pansy speaks up, "I know you're wondering what's going on Potter, don't worry your tiny half-blood brain trying to figure it out, I'll just explain it for you."

She continued, "While you were ****," she winked at him, "I held you hand and had you sign a magical contract stating that you voluntarily became my House-elf."

To his surprised wide eyes she rolled her eyes and told him, "Yes this is a thing that can actually happen, you would know if you weren't always gallivanting off with your pet Mudblood and Blood-traitor."

Crossing her arms and continuing to talk, she explained, "As my personal house elf, you are unable to disobey my orders and can hear me mentally when I call you from a distance. Your magic has changed to include House-elf magic so that you can easily serve me."

Looking at him without sympathy she gave him his first full set of orders, "You will never try to inform anyone about being my house elf. You will never try to escape being my house elf. You will never try to put me in a disadvantaged situation. You will never use house elf magic except for when I directly order you. You will act normally when we are not alone. You will never divulge you are my House-elf, and that I am your master. Finally, when alone you will address me as Mistress Pansy."