I'd.. erm, I'd like to put a prompt up, so here goes.
In the antique store where the alicorn amulet was found, Twilight zones in on an odd camera. She takes it home, where through some folly, She, Spike, and her friends get their pictures taken. Later that night, the pictures leave the photographs, becoming corporeal through the camera's magic. Unfortunately, it's the 'Photo Negatives' (Possible name?). They act polar opposite to the originals, basically the discorded form separated from the original. (I.E. Photo Negative Spike is Generally disobedient, rude, and destructive.) They can't be erased, and have every claim to the lives of the originals. So now what?
They live with each other, the originals trying to normalize or 'un-corrupt' the Photo Negatives.
I thought of this as an alternate Discord Debut episode path. Instead of becoming opposite, they deal with their opposite.
Don't shoot me if I did something wrong. Use a cleaver instead.