Carlos is one of the residents of the American colony.
Carlos is a muscular young adult with curly black hair which he covers with a white bandana. He wears a white unbuttoned shirt and has earrings on both sides.
Carlos seems to be of energetic, gleeful character. He seeks Luna's attention and praises her often.
Carlos is shown to have great persistence keeping himself awake for thousands of years in order to serve Luna.
He appears to have morals, as he and Max were startled by Stanley's intent on killing the enemies' science leader.
Carlos was going to give Luna a platinum ring. However he was not able to give it to her because he was petrified along with the rest of humanity for over thousands of years. Carlos retained consciousness by refusing to let Luna die single and persisted for over thousands of years. 
Carlos and Max accompanied Luna and Stanley through the forest. Carlos and Max tried to impress Luna with a display of strength by carrying the supplies, with her shrugging off their advances before Stanley tells her that she has to preserve her strength because she has a role to play. After gathering a good vantage point, he catches a glimpse of the Perseus and remarked that the science leader is nothing to Xeno. Carlos is nervous when Stanley insists on killing the leader. Moving the questions further, she asks why he needs her. Stanley explains that he will send Luna to spy on the Kingdom of Science to draw out the science user for him to snipe him. Carlos is scared by Stanleys preparation for a sniper attack.
Carlos stayed at the vantage point with Stanley and Max. Carlos was worried about how Luna was going to integrate with the crew of the Perseus. Carlos was notably disturbed by Stanley’s eagerness to assassinate the science user of the Perseus.