Plot hole: The opaque red lined map that Otomo retrieves from his first fight is ridiculous. Why would people who know where the hidden base is be carrying around a map on them (which shows a route so basic that they'd have to be brain-dead not to be able to remember it anyway) just so that conveniently one of their enemies can get it?
Trivia: At least two of the characters in RoboCop 3 are based on Frank Miller's, (the film's screenwriter), own comic-book creations. 'Otomo' the cyborg samurai, pays homage to his "Ronin" comic about a masterless samurai whose spirit is reanimated with futuristic biotechnology. 'Bertha Washington', CCH Pounder's freedom fighter in the film, is a reference to Martha Washington, the freedom fighter from Miller's "Give Me Liberty."