Good question - if so, it would be 3rd Edition or earlier. I have heard rumours... Also, 1st Edition 40K allowed/forced players to generate many characters and creatures somewhat randomly. I would not be surprised if this was inspired by some old set of WFB rules.
Some of the old 40K stuff is pretty hilarious to look at - Eldar were "Space Elves" and the now-gone Squat were "Space Dwarfs". How very 80's 
