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Added as part of a collaboration between Azur Lane and World of Warships, Saint-Louis is based off of a Marine Nationale heavy cruiser proposal designated "C5". The project was intended to bolster France's cruiser forces after the restrictions of the Washington Naval Treaty had been lifted, succeeding Algeriè and similar ships. However, design work was suspended after the Fall of France, and no ships of the class were ever laid down.
Saint-Louis is portrayed with grey hair and red eyes, dressed in crusader-inspired attire. She holds strong religious ideals, believing herself to be subject to God's will.
As a reference to the game from which she was taken, Saint-Louis has skills that improve her high-explosive damage and increase her speed for short periods of time.
Not to be confused with St. Louis.