While 'Whatsit' is not associated with famous individuals, it gained recognition as a whimsical term from children's literature.
Screen Details
Mrs. Whatsit - one of the three mysterious celestial beings in Madeleine L'Engle's 'A Wrinkle in Time' and its 2018 film adaptation starring Reese Witherspoon. The character represents a former star who sacrificed herself to fight against darkness.