Trailblazer is the main protagonist in the game 'Honkai: Star Rail.' As a player-controlled character, Trailblazer embarks on a journey aboard the Astral Express to explore the vast universe. The character's identity is intentionally left ambiguous, allowing players to project themselves onto the protagonist. Throughout the game, Trailblazer interacts with a diverse cast of characters, uncovers the mysteries of the Honkai universe, and battles against formidable foes. This character serves as a pivotal link in the storyline, driving the narrative forward and engaging players in epic adventures.