Trianne Walker is a character in the game Honkai: Star Rail. She is known for her intelligence and calm demeanor, often acting as an advisor to the main cast. Trianne possesses a deep knowledge of the Astral Express and its history, making her an invaluable resource for the crew. Her analytical skills help the team navigate complex situations and make strategic decisions, while her mysterious past adds depth to her character. Trianne plays a supporting yet significant role throughout the story.