Favorite alien race in a videogame

[Grouchy Imp_v1legacy]

The ant people from Master of Orion 2.

I came into this thread to mention the Klackons, but it seems I have been beaten to the punch. Fine then. I'll see your Klackons, 101, and raise you Silicoids!

 

[chozo_hybrid]

Given my username, Imma have to go with Chozo of course.

 

[Brendan Stepladder]

Well, Elites, were taken, so that leaves the Grunts from Halo. It was sadistically hilarious to watch them panic at the first sign of trouble. Hunters from Reach get an honorable mention for being just that fun to fight.