According to the Deathbringer, the Radical Destruction Bringer's reason to destroy humanity was due to its assumption on said race as a dangerous pathogen to the universe.
Their name derives from , a type of fish and often mistaken as "Marine" due to their operational environment.
It was regarded by the local as a god who ate intruders of the forest, although in reality, it was trying to protect its own nest.
It emerges in the modern era as a ghost due to Miku's own sympathy for said monster's extinction.
Serving its function as a carrier, it can carry three Container Mechas and has twin cannons on its nose.
The young boy, his best friend, and a mysterious new girl in town manage to snatch the orb away from the boys, breaking the spell it has over them, just as the monster nearly destroys the building on which they stand.