Trixie

Trixie, or Trixie Lulamoon, is a female unicorn pony and traveling magician. She is the main antagonist of Boast Busters and Magic Duel and a supporting antagonist in the chapter book Twilight Sparkle and the Crystal Heart Spell. She also makes multiple appearances in other episodes, chapter books, and the IDW comics. She tends to speak in the third person and refer to herself as "The Great and Powerful Trixie". The name Trixie is often a diminutive form of Patricia or Beatrice/Beatrix.