Her alter ego, Mona the Vampire has a "vampire sense" which tingles every time there is something foul in the air. Together with her two friends Lily/Princess Giant and Charley/Zapman, they solve some unlikely mysteries. She dislikes cleaning her bedroom and would rather be battling her arch nemesis, Von Kreepsula. Mona has a cat named Fang, who is her trusted sidekick. She has a talent for breaking spells.