Chelsea explores Dreamtopia with the people she meets there, and Dreamtopia is inspired by people she knows. She imagines Otto as the Notto Prince, and Barbie as the Rainbow Princess, the Sugar Spun Fairy, and the Forest Princess.
Chelsea loves the color pink, flowers, silly jokes, puzzles, glitter, science, singing, and being imaginative. She is funny, brave, honest, and good at solving problems. She dislikes being slow to grow, at least compared to her older sisters, so Barbie has to remind her to enjoy the creativity of childhood. Chelsea is a good leader, though isn't always a good listener.