Koby is a young Marine recruit with a notable transformation from his past as a captive of the Alvida Pirates. He stands with a lean frame, having grown tall from Garp's rigorous training, and sports shaggy kobi pink hair tied under a brightly patterned bandanna. A cross-shaped scar marks the space above his right eye, and round-frame glasses sit on his face. He wears the standard Marine jacket, pants, and neckerchief, but his demeanor still carries traces of a timid soul. Despite his self-doubt, Koby clings to the spark of ambition Luffy ignited, striving to overcome his fears and prove his worth as a Marine.