When stolen Godzilla energy is transferred into a giant Meganulon, the resulting mutation is the monstrosity known as Megaguirus. As the ultimate predator and brutal fighter, Megaguirus expands its accompanying Meganulon swarm's territory while swiftly eliminating potential enemies.

The massive insectoid kaiju is able to fly at supersonic speeds with wings that can generate hurricane-force winds, and it can emit high frequency ultrasonic waves capable of shattering concrete and bringing buildings to ruin. Its front legs feature scissor-like claws and its scorpion-like stinger can draw energy from its victims, including Godzilla. Because it was mutated by Godzilla’s energy during development, Megaguirus has more developed jaws and far greater size and strength than anything previously seen in its origin species.