Read the following passage:
A long time ago, there was a beautiful princess named Sophia. Sophia had long, golden hair and sparkling blue eyes. She was kind and gentle, loved by everyone in the kingdom. One day, a wicked witch cast a spell on Sophia, turning her into a frog. The prince of the kingdom heard about Sophia's fate and decided to rescue her. He searched everywhere and finally found Sophia in the form of a frog. The prince kissed the frog and broke the witch's spell, turning Sophia back into a beautiful princess.
What is the character of the wicked witch in the story?