Breakdown

Like Hedorah, Destoroyah is a composite life form formed from trillions of near-microscopic organisms, and as such he possesses vast capacities to adapt and regenerate. The base organism resembles a miniature horseshoe crab barely larger than a speck of sand. Trillions of these creatures would later combine to form Destoroyah's juvenile forms, which manifested as several man-sized crustacean monsters.

When threatened by the J.S.D.F., the creatures merged again into a single, massive aggregate form, which evolved further into a winged bat-like form. After being wounded by Godzilla Junior, Destoroyah regenerated into its demonic ultimate form and would later temporarily separate into multiple copies of its aggregate form in an attempt to overwhelm Godzilla during their battle. It appears that when the individual Destoroyah organisms fuse, they all die if the resulting creature is killed before it can split up into its smaller forms and reform. This is shown when Godzilla nearly kills Destoroyah by blasting the exposed floral pattern on his chest and Destoroyah responds by breaking into a group of aggregate forms.

By contrast, when the Super X3 and the military use their ULT lasers to freeze the monster's body at a microscopic level, Destoroyah cannot separate, causing all of the organisms making up the final form to perish upon colliding with the superheated ground.