Treasure president Masato Maegawa and Alien Soldier director Hideyuki Suganami had big ideas in mind for the potential of the game's bosses, with two ideas being thrown around to add a boss with 100 or even 1000 transformations, or a boss with 100 moving/multi-jointed parts. Neither of these ideas were added due to time constraints, but Maegawa still took pride in this early idea for motivating them to further develop the multi-jointed sprite animations in the final game.