Thargg
Thargg, ruled over by a powerful reptilian warlord, has become known as "The Slaver's World". It gained this appellation when it enslaved the populace of Murgador, forcing that planet's inhabitants to mine it's own mineral wealth, that Thargg may profit from it.
Thargg is inhabited by a biped reptilian species with a very militaristic nature. The entire surface of Thargg is covered by an immense military installation. Said installation was built using the mineral wealth procured from the back breaking labors of the enslaved population of the planet, Murgador. It is likely that the pilfered revenues and raw materials imported from Murgador were being used to build up an unstoppable military force, in Thargg's sector of space. One that could have easily conquered other neighboring worlds, before pushing forward into other galaxies. Due to intervention by the Legion of Super-Heroes, this goal was never realized.