In the prototype of the game Geo had a different mugshot, however, the likeness of this mugshot is used in another game. Like the Battle Network games before it, Star Force has a crossover feature with Lunar Knights, a spiritual successor to the Boktai series. In Lunar Knights, Geo's mugshot resembles the one found in the prototype. The MegaMan sprite, however, is much closer to Star Force's final mugshot.