Board Thread:Spoilers!/@comment-6175354-20151002193930/@comment-1916997-20151002204806

Well, we already know Lancelot had the affair with Gwen, based on what he said in 2x03, so we'll have to see how many other things from Arthurian legend they do. But I think just based on Arthur's casting call, we know he's going to be at least a bit shady.