The familiars are also different, being characters from the manga: the Pegasus was originally Nurikabe, the Eagle was Konaki Jiji, and the Mirror was Sunakake Babaa. Finally, a few of the minor enemies are different; most notably the "Pirate Ninja" found in some of the Guerilla Warfare levels was originally Nezumi Otoko, and Kitaro rides on Ittan Momen during the Dog Fight levels.
The familiars possess distinct characteristics, stemming from manga characters: Pegasus was initially Nurikabe, Eagle was Konaki Jiji, and Mirror was Sunakake Babaa. Moreover, some minor adversaries have undergone modifications; most notably, the "Pirate Ninja" in Guerilla Warfare levels was originally Nezumi Otoko, while Kitaro rides Ittan Momen during Dog Fight levels.