The Combine

The Combine is an immense and extremely powerful interdimensional empire that is composed of allied and enslaved alien species. They are the secondary antagonists of The Purge Gang Saga. They are also the Titans ' arch enemies.

Biography
For millennia, the Combine empire had spread throughout the multiverse, enslaving many species and draining their resources to achieve their ultimate goal. Unknown to the species they would enslave, they would secretly rip their worlds and transform them into space stations known as "ARKs". They use these space stations as giant arenas for their own entertainment. At some point, they encountered another species that desired multiversal domination: the Titans, a race of gigantic aliens. According to the Vortigaunts, they have been at war for centuries. Despite this, they have never abandoned their strongest desire. Decades before the Lambda Incident, they were responsible for the near extinction of the Nihilanth's race, forcing the last one to escape to a new world along with its minions. After the death of the Nihilanth, portal storms spread across Earth. Using them to their advantage, they launched a surprise attack on humanity, killing 60% of the human population. This event was so disastrous, former Black Mesa administrator Philippe negotiated Earth's surrender, sparing the rest of humanity. For the next 20 years, the Combine had depleted almost all of Earth's resources. When UndeadShadow64 returned, they saw him as an extreme threat to their rule and tried everything to kill him. They were unsuccessful, as the Titans arrived on Earth while they were sending a distress message to the Combine Overworld. Knowing they would risk death and destruction if they engage their rivals, they abandoned Earth. What happened to the Combine after they abandoned Earth is unknown.