In order to fight the Ultimate Super-Being, the player must choose the following options:
- "Rescue the research center"
- "Surrender and fight later"
In the last stage, Colonel Bahamut, the leader of the rebellion, succeeds in merging his spirit with the corporeal qualities of the alien, which results in him transforming into an all-powerful symbiotic being.
The creature first manifests as a muscular human/alien hybrid radiating with energy. The beast has superhuman speed and agility, being also able to project blasts of its own energy in order to attack from a distance. However, the entity results to be very unstable and unable to contain its own power, ending up losing control and ultimately transforming into an amorphous, two-headed, giant monstrosity. As it grows more unstable, it mutates once again into a beating heart surrounded by tormented faces that pulsate outward when the heart is hit.