Yesod has short, desaturated violet hair cut in an asymmetrical fringe, which covers his right eye. He wears the patron librarian outfit, in the form of a purple coat extending to his knees, with a white tucked-in shirt and an deep violet necktie with a glossy violet brooch underneath, along with purple, straight cut pants fastened with a white belt and black dress shoes. Compared to other Patron Librarians, Yesod's appearance is exceptionally orderly. 