What actors and actresses appeared in Dark Sector - 2008?

There is no record of any actors or actresses appearing in a video game called "Dark Sector" from 2008.

It is possible you are thinking of "Dark Sector," a video game released in 2008 for Microsoft Windows, PlayStation 3, and Xbox 360. However, this game did not feature any live-action actors or actresses. The characters were all digitally rendered and voiced by professional voice actors.