Vanguard Princess (ヴァンガードプリンセス Vangaado Purinsesu), also known as Vanguard Princess: Senjin no Himegimi (ヴァンガードプリンセス 先陣の姫君) is a Japanese freeware dōjin 2D fighting game for Windows, developed by a single programmer and illustrator called Tomoaki Sugeno, nicknamed Suge9. The game was released on June 26, 2009 and was created using Fighter Maker 2nd. The latest version of the game is 1.08, released on January 14, 2011.
Vanguard Princess was fully developed by Tomoaki Sugeno (or Suge9), an ex-Capcom sprite designer who worked in games like Resident Evil 3: Nemesis and made character sprites for The King of Fighters EX: Neo Blood. Sugeno uses Fighter Maker 2nd for his work, a popular graphic engine for Windows by ASCII. Sugeno designed and illustrated the game by himself, but the music was taken from "nash music library", a GNU library of songs. Sugeno also resorted to voice actors for recording the voices for all the characters.