A smuggling ring that most notably deals with illegal and dangerous goods, such as Tainted Cores, drugs, stolen weapons and artillery etc. They are ruthless but try to be secretive so they don't get caught.
An Union that focuses all of their efforts into the destruction of Tainted Essence Being and the hunt for people that illegally collect Tainted Cores. Their goals are to keep the world pure from anything that could taint it and they can be a bit extreme in their efforts sometimes.
An Union of people that want to advance sciences no matter the cost - you could say their ranks consist of a lot of ruthless scientists that value scientific progress over ethics. There are also non-scientists like fighters and others among their ranks.