Applestar is a beautiful, sky-blue eyed slender tortoiseshell she-cat.
She, Mothwind, and Dustfire discuss the new omen that there was going to be a twoleg-caused-disaster, a drought. She gets the face of the cat of the prophecy, who was revealed to be Willowkit to be in the pool.
She appears in Willowkit's dream when she passes out, and gives her the prophecy. Applestar was very helpful but doubtful whether they should have told her at such a young age, but she was afraid that the drought would have started earlier.
Applestar can read minds, as she was the center of a prophecy when she was very young, having a clear connection with Willowkit.