Carlos Barrios

Carlos Barrios is a supporting character introduced in the later parts of the Dr. Stone anime (specifically in Dr. Stone: Science Future, the fourth season).

He is a muscular young adult with curly black hair (often covered by a white bandana), who wears an open white shirt and has earrings. Originally part of the American Colony (aligned with Dr. Xeno's group), he served as a driver and assistant, particularly for Luna Wright (acting as her driver and showing strong devotion/affection toward her, often described in a very enthusiastic or "simp" manner).

Carlos has an energetic, cheerful, and persistent personality—he's gleeful, seeks Luna's attention/praise, and demonstrates loyalty (even showing extreme dedication in the story's context). He has morals, as he's unsettled by more ruthless plans from others in his former group.

He eventually defects and joins the Kingdom of Science, where he helps out with tasks like driving vehicles (including primitive or recreated ones), creating distractions, or other support roles during operations against the American side.

He's a fun, bombastic side character who adds some comic relief and dynamic interactions, especially alongside Luna and Max Adams.