Sam is capable of releasing embers that set the entire battlefield ablaze. There are several rocket thrusters hidden within the suit, enabling the usage of flight and the ability to overheat the armor; making it far more dangerous. Sam has a large build and is adorned from head to toe in metal plating. While Blade thought they were a human in a suit of armor upon their first meeting, Silver Wolf instead describes them as a "metal humanoid," implying they are a mechanical lifeform. Later on in the story though, it is revealed that Sam's true identity is Firefly.

Firefly is member of the Stellaron Hunters and a young girl who's a guide for the Iris Family. Born as a weapon, she's afflicted with the agony of Entropy Loss Syndrome due to genetic modification. She joined the Stellaron Hunters in search of the meaning of life, relentlessly pursuing ways to defy fate. Firefly is a kind and sociable person, who showcases care for those around her. It is revealed that Firefly suffers from Entropy Loss Syndrome, which causes the body to slow down progressively over time. This pushes Firefly into being a stowaway into Penacony so that she may live without having to worry about her body. Firefly loves Oak Cake Rolls from Clock Diner, saying that she purchases one every day.

"My name is Firefly, and I'm from the Iris Family. I work as a stage performer, although right now I'm just an extra..."