Misty is a Warrior Cats OC.
Long story short, she was born as a kittypet, but she ran away after the neighbor cut her tail because she wandered too far. She learned to live as a forest cat and met with one of the clans (I still don't know which one). Her backstory is still a WIP so there is more about her (but I'm too lazy).
Warrior Cats belong to Erin Hunter
Misty belongs to me
Lines belongs to the woods