“In Honkai: Star Rail, Firefly is a young Stellaron Hunter who pilots the powerful “SAM” (Samuel-IV) mecha armor, a fiery, red/cyan mech from the ancient Glamoth empire, allowing her to fight against the Swarm despite suffering from a fatal genetic condition (Entropy Loss Syndrome) that gives her a shortened lifespan, making her journey about finding the meaning of life. She’s a key character in the Penacony storyline, known for her duality as the gentle Firefly and the formidable, flame-wielding SAM.”