some of the game's enemies are notably too similar to various characters from film and comic books, a fact that ohba attributes to his own lack of creativity. he made rough sketches of these characters based on what he had in mind at the time, expecting that the character designer would modify them and add their own creative touches for the final game. however, they did not, resulting in some enemy characters who were similar to the likes of sylvester stallone, batman, spider-man, and godzilla.