Princess Erroria

Princess Erroria is the placeholder name of a female Pegasus pony with a vanilla coat, wisteria mane and tail, and blue irises. Despite her placeholder name, she is not depicted as a princess in any official material. Depending on the episode, her cutie mark is either a single pink flower, a white feather, a horseshoe, or nothing at all, and she appears as four different kinds of pony, including as an Alicorn due to an animation error.

In When the Cold Breeze Blows Away, she'll be attend into the How I Can Help Make the World Great ceremony when she survived in during the USRAC War.