[quote=Rin]
As someone who has played the original VN multiple times, no there is not.If you mean the Fate/Prototype OVA thing, then that was just something made out of Nasu's random notes whilst he was still developing the story. Arthur was dropped pretty quickly, and for pretty much the entire time Arturia has been Arturia and I would have her no other way.
[/quote]

A male Arthur could be explained as the Male is based on the LEGEND of King Arthur while Arturia is the true King Arthur. They did the same thing with Jack the Ripper, remember?