SHERLOCK—I mean, er, your highness is surely mistaken. I am no warl—
John, you complete all chores I set for you, even though I deliberately increased the list till the point where it should be physically impossible to be completed in one day. When we hunt, passing bandits are more often than not hit by fallen branches, whose wood has hardly enough rot to justify the drop. Royal guests you show an unusual antagonism to have been proven to be magical 70% of the time. Not to mention the fact that I have caught you having glowing golden eyes on no less than eighty five occasions. In conclusion. WARLOCK.
I drew Arthur!Sherlock and Merlin!John from BBC Merlin. I was kinda torn as to which role they should take, but decided on this configuration because I cannot imagine Sherlock making a very good manservant, even with the help of magic.