"I can do that. For money."
The Freelancer Mercenaries are either your best friend, or your worst enemy, depending on who is paying them.
As a Freelance Mercenary you have been contracted to defend the USS Almayer from whatever threat they are dealing with. As a Mercenary you are somewhat well equipped and have access to overall good equipment and items, thanks to the abandoned USCM weapon stockpiles from half a decade ago. Mercenaries function somewhat akin to the USCM, however they are somewhat less powerful in direction comparison.
With the loss of the UA/USCM support in the Neroid Sector, due to the defeat of the Dust Raiders on Whiskey Outpost in 2181, the Freelancers stepped in to fill the power vacuum that was left behind. The UPP couldn't fill it as that would have been seen as an invasion. The freelancers use a mix of both legally and illegally obtained weapons and munitions, mainly acquired from the Dust Raider's abandoned bases and equipment stockpiles. They run Irkala Station, which is a space station in the centre of the Neroid sector, which acts as their main trading hub. To this day, many colonists see as Freelancers as the main fighting force of order throughout the Neroid Sector.
Years later, when the USCM Company from the 'Falling Falcons Battalion' as well as the response ship, the USS Almayer, arrived to the sector and in dire need of help, the Freelancers, sees this as either an opportunity to assist the Marines or on some views, an opportunity of raiding the Almayer for loot.
They'll fight whoever they were paid to fight as long as their conditions are met upon taking up the contract. The main condition being salvage rights to the ships/settlements/facilities destroyed whilst fulfilling the contract. You've already been paid to fight, but no sense in not squeezing out some extra cash. The CL is always looking for a chance to escape, perhaps you can fulfill his wishes for a price, or maybe get the CO of the Almayer to pay you extra.
DO NOTE: While some Freelancer Mercenaries help the ones who have cash and are in need, some are willing to go against them and take their cash instead. Chances are, they might be hostile to the Marines, and their objective is to ransack the Almayer and steal anything that can be valuable to your team. Any other faction besides the Marines are neutral unless otherwise. The details are located in your backstory when you spawn (seen above at the "Detailed Description").