Secret cast, including all of the TV shows Secret actors and actresses with photos and actor bios (4 Items). This full list of the cast of Secret covers Season 1 on, including all Secret cast members. If you are wondering, "What are the Secret actors' names?" or "Who starred on Secret?" you can sort this alphabetical list by Secret characters and their pictures. Items on this list include Byeon Hee-bong and Ha Ji-won. Click any actor's name to read more information. This list includes the casts of all Secret episodes.