Ghoulia Yelps is a zombie of brilliant intellect and quiet introspection, harboring a deep devotion to comic books, especially the superhero Dead Fast. As Monster High’s sharpest mind, her peers frequently seek her academic expertise, though she remains reserved. Her closest bond is with Cleo de Nile, who aided her in overcoming social isolation, though their friendship occasionally strains under Cleo’s opportunistic use of Ghoulia’s skills. In the anime adaptation, her pet owl Sir Hoots-A-Lot bridges communication, translating her zombie moans into speech—a contrast to other versions where friends learn her language. Pale ashen skin, light blue hair streaked with darker hues, and signature cat-eye glasses embody her geek-chic aesthetic. Her wardrobe features brain motifs or crimson accents, nodding to her undead identity. Shy yet resilient, Ghoulia balances her zombie sluggishness with surprising agility in dodgeball and inventive problem-solving. Stressors like abrupt changes or conflicts heighten her anxiety, but she confronts challenges with quiet resolve. Raised by strict zombie parents at the Department of Monster Vehicles, she faces restrictions on attending events like Necrocon. Her sister Moanica appears in literary spin-offs but not the anime. Friendships with Frankie Stein and Lagoona Blue showcase her supportive side, often aiding them through clever solutions. Her abilities include a banshee-like scream that shatters objects, immunity to pain and temperature, and sharp intellect. Zombie traits grant immortality and durability, though slow movement persists. In the anime, she remains a secondary figure, her quiet brilliance amplified by Sir Hoots-A-Lot’s translations, staying consistent across media.