Board Thread:Character Discussion/@comment-25555565-20150520011130/@comment-25375217-20150520014038

Although I usually disagree with the usage of this statement, in this case: Once =/= Live-action Disney

As far as I'm aware (I'm aware of very little related to this subject but I'm pretty sure) Arthur was not Merlin's apprentice in any other media. I would say the Apprentice is Yen Sid, because that's the owner of the Sorcerer's House in Storybrooke, or (more likely) just a semi-original character vaguely based off of Mickey Mouse.