Paranoia. Plays in your core. Each unique non-Bluegill [TNG] personnel you own (except Androids and Holograms) gains Bluegill. Each of your Bluegill personnel are Integrity -1 and Strength +1.
The alien parasite bore a striking resemblance to the Trill symbiont in its ability to combine its physiology with its host. Unlike the Trill, the parasite could be separated without killing its host, and it completely subsumed its host'
Image courtesy of trekcc.org
No copyright infringement intended