Merlina is a brilliant yet quirky student with a stark preference for the arcane and macabre. Her distinctive traits include a high intellect, sarcastic wit, and a deep fascination with the supernatural. Merlina's unique fashion sense consists of gothic attire, and she prefers isolation to social gatherings. The character has a close and complex relationship with her family, particularly her father, where a sense of mutual understanding and high expectations prevail. She frequently butts heads with her mother, who serves as a foil to her eccentricities. As a central figure in the Addams Family universe, Merlina deals with supernatural events and family legacy, often playing a pivotal role in family schemes and adventures.