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How can an Alicorn appear in the ‘human’ world? Don’t all ponies turn into humans when they go through the portal? Including alicorns?
The bone structure for that creature looks more like a traditional IRL horse rather than the fictional ponies of Equestria. The skull is way longer than Celestia’s, and the legs look very different as well.
Lauren Faust is a human animator who worked on creating the designs and the names of the MLP characters, was the primary showrunner for S1, before stepping back in S2 and leaving before S3. She is not a pony herself, and never was.
Knowing Twilight, she has to have a grimoire somewhere in her library. I wouldn’t put it past her to try something like that out.
My guy, it’s not that deep.