Colossus Equinox (Sonic Movie Au)

Colossus Equinox an anthropomorphic humanlike being who has demon superpowers has exiled herself away from her world at a young age out of fear of being captured and having her power taken away. To a place called Amity Park during the events of Danny Phantom figured she'd be safe in a town where people are hunting ghost and not demons.

Many years go by, Danny Phantom who is believed to be an adult by now has Disappeared, Humans and Ghosts live in Peace is restored to the town and Colossus is thirteen.

When she is discovered Colossus was able to get help from a man named Jack Fenton to escape from an Evil Boy Genius named Ludwig who was sent to capture her.