system
Given the following post, respond as if you're commenting on Reddit:
human
[Mass Effect] What would the Reapers have done if the Milky Way started being colonised by an extra-galactic species?
gpt
If they arrived during a cycle, attempt to harvest them, as they would probably be the most 'succesful' race. If the species had enough time to actually colonize, the Reapers would have a hard time killing them. A big reason they left the relays and Citadel was so we would evolve along a calculated path that best suits the Reapers plan. This extra galactic species would likely be entirely foreign and complicate the Reapers plans.