By 1337W422102 2 Comments
This one's hard. There are some more concrete ones like GLaDOS or Andrew Ryan, but I really like more mysterious or abstract ones like the Benefactors from Half-Life 2 and its Episodes, and the environment in S.T.A.L.K.E.R. and the Fallout games.
Not sure what to post, so here, have a picture of GLaDOS.