The figures for the 375 castle were designed by James Sutton, another Brickish member in the UK. I had my doubts that figures at this scale would ever look totally believable, but I think you will agree that these do.
James has also made LDraw files and I think that it is his plan to make them available to anyone who wants them at some point, so I expect to see many of minfigs at this scale in the future!
Well done James, I will certainly be making some very soon. They are sooo cute!