Twilicorn

Derogatory term in the Brony community used to refer to the controversial alicorn princess version of the My Little Pony character Twilight Sparkle. Alicorns are demigod-like beings in the poniverse that have both wings and a unicorn's horn, and when the show's producers decided to transform one of the show's main unicorn characters into an Alicorn Princess, a large section of the fandom did not receive it well.