Neptuneman is a prominent character in the 'Kinnikuman' series, a Japanese manga and anime about wrestling superheroes. He is known for his muscular build, mask, and cape, embodying the persona of a powerful and mysterious wrestler. Initially introduced as an antagonist, Neptuneman is a member of the villainous Perfect Chojin faction. He is formidable in the wrestling ring, showcasing exceptional strength and skill. Over time, his character undergoes development, revealing more depth as he transitions from a villain to a nuanced ally, making a significant impact on the series' storyline.