 Although the game's primary protagonist, Toby "Kissy" Masuyo, is a woman, the player is led to believe she is a man until her face is revealed in the ending.This predated by one year Samus Aran from "Metroid" as a human female playable character.In the "Mr. Driller" series of games, Kissy Masuyo is a supporting character under the name Toby Masuyo (they refer to "Kissy" as being her nickname).