Pentagon is a villainous character from the anime series Kinnikuman. Known for his star-shaped head and villainous demeanor, Pentagon is part of the Devil Choujin faction. He is often seen working alongside his partner Black Hole. Pentagon is notorious for his cunning tactics and ruthless fighting style, making him a formidable opponent in the ring. His abilities include manipulating space and time, which he uses to gain an upper hand against his opponents. Despite his sinister role, Pentagon's unique design and powers make him a memorable character in the series.