Eclipse

Eclipse is a mercenary corporation, providing effective security and firepower for prospective employers. They have few scruples about the nature of their employers, so long as they can afford their services. They appear to be in collaboration with LOKI, utilising their mechs in battle. Eclipse mercenaries work in teams of troopers and vanguards which may be led by more experienced commando units.

Operatives can be identified by their distinctive yellow armor and the Eclipse logo, a sun crossed in the center by three horizontal bars.

Mass Effect 2
In Mass Effect 2, Nassana Dantius employs Eclipse mercenaries on Illium to protect her from the drell assassin, Thane. Shepard must fight his way through numerous Eclipse troopers in his efforts to locate the assassin. In one scene, Shepard confronts a lone Eclipse trooper and interrogates him. Shepard has the option to extract information non-violently or lose patience and defenestrate him.