Ari Hauntington

From Monster High (G2). A British ghost pop star who blends in with humans as "Tash". She is later kidnapped by Moanica D'Kay, who assumes she's a real human and decides to use her as bait and turn her into a zombie. Ari reveals her monster self after the main characters fight Moanica. Later on, she becomes a student at Monster High and a local sensation. Potentially named after Ariana Grande.