The following is a list of all 66 costumes that are available to Dio in Tales of Phantasia: Narikiri Dungeon. The costumes that are available to Mell are listed on another page, since each set of costumes follows a different numbering system within the game. Most costumes are interchangeable between Dio and Mell without gender differences, but certain costumes can be equipped by only one character. Because of this, some synthesis requirements for one character may involve costumes that are accessible only by the other. All costumes that are used during synthesis are consumed.