User blog comment:Reptileman778/What is the canon explanation for why you are fighting geth in multiplayer?/@comment-5607673-20120910204242/@comment-5503561-20120910223300

Geth as a software do. What Asari councilor means is that they're facing physical geth bodies, but without get as a software inside them. Instead of geth, you have reapers controlling the physical bodies.