Zelda Cleaver is a prominent figure in the magical community, known primarily for her role as a mentor and guardian to her niece, Sabrina Spellman. A highly intelligent and disciplined scientist, she has dedicated her long life to the study of quantum physics and chemistry, often conducting experiments in her home laboratory. Her academic career culminated in the position of Associate Professor at Adams College, where she taught for several years. Her works include numerous formulas for complex potions and theoretical contributions to modern magic, combining scientific rigor with arcane knowledge. In recognition of her knowledge and integrity, she served as a member of the Witches' Council, the highest governing authority in the Magic Realm. Her most significant achievement, however, remains the guidance she provided to Sabrina in mastering her own powers responsibly.