Shinestar

Shinestar is a lovely, sparkle-furred pink she-cat. She is the leader of ButterflyClan at the beginning of The Sunshine Prophecies. Her apprentice is Whisperingpaw.

The Sunshine Prophecies
Shinestar is mentioned just twice—in the Allegiances, and in Chapter 1, when Memoryfox, a warrior, runs up to Starseeker, and tells him that Shinestar was killed by a horse.