Ok this may be a very unpopular way to interpret this dynamic but I've been really into trans!Percival/Galahad because you have the normal Catholic guilt but you also have the fear of being perceived as a woman or perceived as submissive on Percival's side. Maiden Vs knight, rejection of courtly love, guilt from being seduced by a man in the Mallory episode, the whole shebang. Especially you have an interesting kind of Percival who does not have physical dysphoria perse but specifically dysphoria when it comes to interpersonal relationships. On the flip side you have Galahad dealing with the intersection between two different kinds of taboos for him, along with his genuine friendship for Percival. You can also make this his gay awakening for even more spice. Idk ive been reading who's afraid of gender recently and gender is so many things that can make a relationship interesting

















