St. Louis is a character from the mobile game Azur Lane, which features anthropomorphized warships as characters. She is based on the real-world light cruiser USS St. Louis (CL-49) from the United States Navy. In the game, St. Louis is portrayed as an elegant and graceful woman with a calm demeanor. She plays the role of a reliable and experienced shipgirl who provides support to her fellow fleet members. Her character design and personality exude sophistication, making her a popular choice among players.