Originally, the Hank Pym iteration of Ant-Man was planned for the base roster of Marvel: Ultimate Alliance. According to the game's director Dan Vondrak, the development team ultimately decided against including Ant-Man due to issues with him being a character who constantly changes his size from big to small. They felt that with the camera already being zoomed out and overhead, it would have been hard to see him when he was shrunk down during gameplay. Despite this, Hank Pym appears in the final game as an interactable NPC.