Sicarios are a great part of fun in the game! Some of them are natural born leaders and will make your squads stronger during attacks, others prefer staying at the base and protecting it from intruders. The rarest kind is loyal to their cartel and will die protecting its Compound during wars.
You may collect contracts or purchase chests to get more sicarios eager to build your empire. Level and rank them up to assign new talents and make your name strike terror into the rest of the world.