About thirty years ago, an alien creature crash landed on Mantracora. Needing mental energies to re-power his ship, he usurped the role of Taranith Gestal and used his holy position to select "chosen" members of the Maticorians who he lured below his castle and siphoned their mental energies leaving them mindless husks.
"Taranith" almost succeeded in escaping that world with the arrival of the Fantastic Four who were exploring the Negative Zone in more recent times. Ever loyal to Taranith Gestal, members of the Mantracorians helped him capture the heroes so he could drain the mind of their leader Mister Fantastic.  Although Taranith succeeded, the Fantastic Four -- with the help of the disembodied mind of their leader -- defeated the alien  and eventually returned home.  The fate of the Mantracorians is unknown.
Type of Government
Level of Technology
No advanced technology, has metal forging technology.