Nebulous ("Starry Night")

As a Changeling still loyal to Queen Chrysalis, Nebulous fled their hive after Thorax's rise to power. Once discovered and befriended by Clever Cantrip, they began working in Ponyville as an Astronomer, taking up the disguise of a pegasus named Starry Night. Clever is the only pony to have ever seen her true form.

Not entirely evil, not entirely good. Nebulous is mischevious, and isn't always the friendliest. They tend to prefer solitude, only truly enjoying Clever's company.