Aliens in player's team

[sirg]

A reprogramed captured robot/android would be nice, and it shouldn't affect the story.

[shevegen]

I think the idea is rather cool.
The Virus idea already seems to be popular for the story, what could be also nice would be music that happens when the virus is first "noticed"

I had this in a computer game many years ago, I dont know if computer games still put up special music for plot twists (it was a "roleplaying" fantasy game back then)