Charlotte is always annoyed, not smiling that much. She is always doing stuff and never has time for anyone. In fact, she doesn't want to do anything for anyone most of the time, her wife being her only preoccupation in life.
Short Story
Charlotte, under her nickname Charlie, was a former King of Vanaë, legitimate to the throne and leading the Slimes family as the King of Slimes after his deceased father. He always was androgynous, people mistaking him for a girl, but in reality, he was a futanari, but prefered identify as a man. When he discovered Akasen, he left everything to go there with the Slimes who were eager to follow him, and gave his throne to her sister-in-law, Holly. After coming to Akasen, and seeing how it was, identifying as a woman was indeed better from now on. Later, he joined the Yellow House, then, the Thousand Flavor Harem made by her daughter's former girlfriend.