Lyra Heartstrings is a joyful, highly eccentric, and musically gifted unicorn hailing from the vibrant town of Ponyville. Sporting a brilliant mint-green coat, golden eyes, and a cyan-and-white mane, her cutie mark is a golden lyre, representing her profound love for playing music. However, what truly defines Lyra is her hyperfixation on a legendary, mystical bipedal species: humans. She has a borderline-maniacal fascination with human anatomy, frequently marveling at things like hands, fingers, and opposable thumbs. She is infamous among her peers for impulsively mimicking human habits—most notably, sitting down on benches with her legs crossed and dangling just like a person would, much to the amusement (and occasional exasperation) of her best friend and partner, Bon Bon (Agent Sweetie Drops). Despite her whimsical quirks and conspiracy-leaning theories about human society, Lyra has a genuinely loving, compassionate, and fiercely loyal personality. She is highly energetic, sociable, and prone to jumping up and down when excited. She is incredibly affectionate, viewing the world as an endless melody waiting to be played.