This is Corona. She’s a sweet little earth pony slave mare with a deeply troubled past from a fic over on /mlp/. You can find her story in the “slave pony” threads on /mlp/ on 4chan. Be advised that while Corona’s story itself is rather tame, 4chan IS an 18+ site, and the thread itself contains other stories with themes that may make some uncomfortable - particularly slavery and abuse. Original sketch was by the author of the story. He’s nameless but goes by the tripcode !!iopbVld3l5k. Sketch was colored by an unknown artist in the draw thread.