"We are the men of intrinsic value, who can strike our fortunes out of ourselves, whose worth is independent of accidents in life, or revolutions in government: we have heads to get money, and hearts to spend it."
During missions, a mercenary squad is trained at a merc compound. They have no build time, and arrive nearly instantly at the compound by drop pod. There is a short cooldown until the mercenary squad may be trained again. The squad size varies by the unit, and there is a limit to the number of squads that may be trained for each mercenary per mission. Mercenaries benefit from armory upgrades and laboratory research that benefit their base unit.
Mercenaries have unique unit models—60% of the model is altered to ensure the models are unique, but still recognizable.