User blog comment:Legionwrex/How Dead Space is now copying Mass Effect./@comment-3115764-20130210212918

To be perfectly honest, the stark difference between the Dead Space and Mass Effect primary antagonist makes this irrelelvant. the Markers were made by Species X (lets say). Species X sends the markers through the galaxy to cause Convergence events and create multiple Brethren Moons. each Brethren Moon is not so much a single primary species, like the Reapers,but more of a massive glob of organic matter that takes the shape of a sphere because of gravity. The Reapers on the other hand, were made by Species Z out of their own biomass in their own shape. the first Reaper, i'm assuming that this is Harbinger, uses indoctrinated agents to bring about the collapse of a galactic civilization and create more Reapers in the dominant species' image. They're not very similar, really. You could say that Isaac was the catalyst for the entire series because he successfully destroyed a marker, even it it was an imitation. i would assume that this sent the other markers, even the fakes, into a sort of panic mode that the Unitologists turned into a religious justification to hunt Isaac down like an animal. Shepard was't so much a catalyst as a product. Cmdr Shepard was a result of the Prothean's failsafe policy of Beacons, not of some determination to bring down the Reapers or a hit of whatever it was Nostradamus smoked.