Three Primitive Mothras first appeared after Rainbow Mothra's battle with Cretaceous Ghidorah. Rainbow Mothra was badly injured, and the three formed a cocoon around him, sealing him for millions of years so he could heal from his injuries, and millions of years later, it is revealed that the cocoon also caused Rainbow Mothra to evolve into Armor Mothra and become strong enough to defeat King Ghidorah.
Like all Mothra Larvae, the Primitive Mothras spray web from their mouths.
List of appearances
- Rebirth of Mothra III (First appearance)