the second wave of black hole planet 3 aliens were disfigured humans wearing rubber masks (similar to the underground mutant race depicted in "beneath the planet of the apes"). this time the aliens joined forces with a vengeful scientist named shinzo mafune, who controlled the huge aquatic dinosaur dubbed "titanosaurus" by mafune. the aliens did not really care for the scientist, and merely saw "titanosaurus" as a way to weaken godzilla before he faced mechagodzilla 2. after mafune and the black hole planet 3 aliens settled their differences, mechagodzilla 2 and "titanosaurus" attacked tokyo, and battled godzilla. after a lengthy fight, godzilla eventually triumphed over both foes, blowing up mechagodzilla 2 in a giant chasm and (apparently) killing "titanosaurus" (this was never really confirmed, although the particular monster has not been heard from since; in the movie, "titanosaurus" was struck by a powerful atomic ray from godzilla and fell over a cliff, but since he fell into the ocean, it is entirely possible that, freed from mafune's control, the dinosaur simply swam back to his home on the ocean floor and never returned). the black hole planet 3 aliens tried to escape in their spacecraft, but they were blown out of the sky by godzilla. all of the remaining aliens were already killed by interpol agents and the military.