Sun Princess

The Sun Princess (サンプリンセス) was the title of the legendary princess for whom the Sailor Titans were searching in the first part of the Shadow Kingdom arc of the manga. In all versions of Sailor Moon, it is revealed that, in fact, Kasumi Taiyono herself is the Sun Princess, Princess Aurora, although some other people are suspected along the way.

Sun Princess suspects
In the manga several people are suspected of being the Moon Princess by the Sailor Titans and Sol, The Dark Kingdom, or both. In all of these cases these suspicions were proven false. In one case the suspect, Hoshi Shinjitsuno, actually turned out to be a Sailor Titans. When Sailor Themis first appeared in the anime, the others asked her if she was the Moon Princess and the symbol of the sun appeared on her forehead. This is when she unlocks the form Princess Sailor Themis.

List of Suspects

 * Masayoshi Sekaino / Sailor Themis
 * Hoshi Shinjitsuno / Sailor Astra
 * Princess Ruby