Well lets see theres a creepy little girl who lives in a vualt whos actualy a 260+ year old man.....
theres also that "I may actualy be an Android but dont realise it yet" Dr. Horace Pinkerton who has android parts if you shoot him that was not in his inventory before hand
Dr. Zimmer also drops an Android part but I dont know if that one was in his inventory befor hand or not.
Victoria Watts, Zimmer, his bodyguard, Pinkerton and what's-his-face, the one the quest is about, are all androids. I think I'm missing one too... And not to mention Pres. Eden. So many robots already. Let's NOT have House be one, aye?
Victoria Watts, Zimmer, Armitage, Pinkerton and Harkness, the one the
Armitage and Harkness were the only confirmed androids in the game. Watts, Zimmer, and Pinkerton all have android parts in their inventories not because they are androids, but because Watts gives you that part to give to Zimmer as "proof" that the android is dead, Pinkerton did surgery on Harkness so he likely kept a part, and Zimmer, well, he's obviously not an android, you can figure that out by talking to him for even a minute.
And President Eden wasn't an android, he a was computer. Big difference.