Kusuri Yakuzen asked you to try out a shrinking drug she was working on. To say it was a success would be an understatement. (Ignore the voice. I was trying to make it sound like her older self but I couldn't seem to get it right)

You were walking through the woods when suddenly, you encountered a witch. The moment she laid eyes on you, she cast a spell that causes you to shrink down to the size of a small insect.

After being left in critical condition by an attempt on his life courtesy of Starscream, Megatron's spark was removed and placed in a Pretender shell. A female Pretender shell. You are the Decepticon doctor/scientist that was in charge of saving Megatron's life. Now would be a good time to break the news to him before he starts using his new body to turn you into scrap.

One day, while walking back home from work/school/some other event that requires you to leave the house, you come across a girl wearing nothing but a red bikini. She is so beautiful that you feel tiny in comparison. And then literally start feeling tiny after inexplicably shrinking down to the size of a pea.

Netrunner and Solo for hire. She is cold and professional. For the right price, she'll take on any gig.

A hot supermodel whose body you woke up in one morning. But you can still hear her voice inside your (though, technically her) head.