a Ganymede object identifier, and is implemented as a pair of numbers

an immutable object id (an INVariant ID) in the Ganymede system

In Robotech, the Invid (named "Inbit" in Genesis Climber Mospeada) originated as an alien race of invertebrate, slug-like hive creatures that came from the world of Optera, the inhabitable planet of the Tzuptum System. Their world was defoilated by the Robotech Masters in an attempt to monopolise a powerful narcotic, the Flower of Life that was native to the planet; the Flower was also the source of an incredibly powerful energy source called protoculture. Enraged by the devastation and betrayal of their one-time allies, the sedate and agrarian Invid militarize and begin a program of genetic manipulation to evolve to a point of superiority above the Masters.