User blog comment:Kronika X Cetrion/PG Proposal: Arthur Pendragon (Disney)/@comment-2059440-20190901042858

this version of Arthur, unlike the legends he is based on, fits the criteria as it was heavily suggested that he was chosen by divine / magical forces due to his kind nature, in contrast to his brutish rival - he is mentored by Merlin, who should also count, but even before Merlin's lessons Arthur is shown to be a fantasy hero who is of "pure heart" and as stated he holds no grudges against Ector or Kay for the treatment they gave him.

I believe Arthur also tries his best to avoid conflicts, even against enemies such as Madam Mim, his compassion for others is also shown when he genuinely feels terrible over accidentally breaking that squirrel girl's heart due to a spell gone wrong.. which again, contrasts him starkly with the way men of his period were meant to be.. as with many "pure heart" heroes the traits that his ignorant kin felt were weakness was actually a sign of him being the strongest character in his story.