Re: The Culture explores 40K II: Now With 100% more Fanfiction
RE: Culture folks pretending to be Space Marines. All they would need is a very small number of Biologicals (or an Avatoid) being the 'Face' for the chapter. The Marines who would be mostly suited up could be Drones or Knife Missiles inside suits. Or even remotely controlled by a Mind.
In fact a single Mind could probably simulate an entire chapter so long as they were not sepperated by interstellar distances