>>714045845
Definitely not fake, there were lots of people talking about it on release but the /v/ archivs all got purged so yeah
Still there's other resources to find it's real
Here's when someone noticed it one month after release
https://fextralife.com/forums/t310061/banshee-bits
And here's someone dumping a ton of reference images in the same week the game got released
https://www.deviantart.com/troodon80/art/Mass-Effect-3-Banshee-Reference-290331455
Pic related if you can't view it