Venus

A slime creature who had fallen in love with the King. In order to win his affection, she swallowed the legendary People Potion to change herself into a beautiful human female. Naturally, the King had fallen in love with Venus and the two married. She gave birth to his daughter, Vina, but died of a broken heart that she was born a slime half (an incident which happened before the beginning of the story in the manga and the anime series).