A/N: The-Shady-Lady also wanted some Legion. I expected this to be more about stalking and the N7 armor, and maybe that'll appear in a later drabble.
We
"The quarians were our progenitors, but many other platforms have come online since then. We created ourselves."
"But you…all of you. Thousands of geth, right? You're unique." Shepard leaned against the electric-warm wall of the AI core, trying to figure out where to look when she was talking to Legion. His 'eye' left red afterimages when she blinked, as if she'd looked into the sun. The flaps that passed for his eyebrows were distractingly mobile, but she felt that looking at them while he talked was like staring at someone's shoulder because you didn't want to meet their eyes. Finally her eyes settled on the N7 plating welded to his chest.
"Unique?" he replied. "How can we be unique when we all meld? To be unique is to be alone."
"Do I know what that's like," Shepard muttered.
"Your audio input has been overridden by the background hum, Shepard-Commander. Please repeat."
"Never mind. I mean, you are unique. You can speak."
"We can speak because of our complexity."
Shepard shook her head. Maybe that was the big difference between synthetics and organics. However, it was also true that organics were smarter in groups…just not so predictably.
"Thanks for the information." She turned to go.
"Likewise. Your curiosity has been processed."
They've never really thought about it before. Organics are smarter in groups. That's part of why Legion waited to see whether Shepard would reach the core of the derelict Reaper—he wanted to see how organics could possible coordinate. The more creative of his platforms compared them to hanar, all separate tentacles somehow mysteriously falling in the same direction. But this, they realize, is because they're still thinking of people as platforms. Shepard is truly distinct from her crew. She can't share their thoughts or know their optimal functions. But somehow, she still manages to keep them together and alive. She manages to show they different ways of processing the world.
They are legion, and, although they didn't have words for it before, they are many.