I think the VS voice over should be the guy from the Leviathan trailer
https://www.youtube.com/watch?v=Vxxnq5YAVHw
TR should get Total Biscuit. Not because I think he is the best representation of the TR, but because he just sort of sounds like some pompous general calling the shots. Also he does pretty good VO.
NC, I have no idea. Probably Higby as Nanite Ned.