[quote=@Thecrash20] Well that's not fair cause those are Zergs and these are nids, though it's close enough so I can deal with it. [b]But [/b] Changeling 'shapeshift' to look like them not actually becoming them. The missile turrets have no explanation on how they can see them. I'm sure it's just a balancing thing since Zerg entire lore is built around them being in that game. They fool them by looks. Genestealers become part human after birthing them. So they still have human DNA and the newer the generation the closer they are to their host Race. [/quote] Later generations would be more effective for sure, but earlier generations would have a harder time I'd imagine. I know for sure Ravens and Science Vessels run a biometric scan and several others I don't know the names of for reveals, but missile turrets...if I had to guess, it would be a lack of actual transponders to say "friendly". Most likely explanation I can think of.