BBC America ran Excalibur quite a few times a couple months back, which led to me having to eBay this Merlin figure, from Lady Pendragon. I know there was a figure for her as well, based on the 90’s Rob Liefeld comic; but I couldn’t tell you if they were any good. (Yes, I can: probably not.)
I’m kind of surprised there aren’t more King Arthur and Merlin figures: even if you don’t base them on a movie version, it seems like they would sell all right. I do know there’s figures for the newer Merlin program, but I haven’t seen it, and if you have to explain that this kid is going to grow up to be Merlin, the figure doesn’t really appeal to me.