Merlin Headcanons

Spymaster

Servants in Camelot were either observant servants or dead servants. Everyone preferred to be the former.
Most of the servants figured out pretty quickly that something was up with the prince's new manservant. It took them a while to figure it out, and by the time they had, they knew not to mess with him. Anyone who could take on Cornelius Sigan and win was a) on their side, and b) not someone they wanted to tattle on. Besides, he was a nice, friendly sort, always happy to lend a hand or some medical advice.
Eventually, some of the servants started coming to him whenever they saw something worrisome.
"My brother the woodcutter saw a dragon in the woods last night. Do you think there might be another one around somewhere?" (Merlin went white, muttered something about telling Kilgharrah to be more careful and ran off. The next day, the arm the brother had broken when he tripped and fell while running from the dragon was mysteriously better.)
"Lady Eva has the strangest gem in her room. I'd swear it glows." (Merlin was fired. Lady Eva was convicted of treason. Merlin was rehired. None of these events surprised anyone in the slightest, particularly not the last one. The maid who had reported it was arrested by Uther for charges of witchcraft a month later. Her mysterious escape was, of course, entirely unrelated to the fact that Merlin's clothes were covered in dust that could only be found in the dungeons.)
"The new stablehand's been sneaking off to the woods a lot." (Merlin was glimpsed following said stablehand. Merlin came back. The stablehand didn't. The other servants thought they probably shouldn't ask. They did, however, appreciate the sweet cakes that showed up at their table.)
Morgana tried to bribe a few servants into working for her. She made very generous offers. They did the logical thing. Money was tight, after all. They took the money. (Then they told Merlin and fed her false information. She figured it out eventually and tried to take revenge. Merlin came home with a split lip. A terrified guard who reported seeing Morgana said she could barely walk.)
Queen Guinevere made magic legal. It was announced in court that Merlin was a warlock and was to be the new Court Sorcerer. The Steward expected the servants to be more surprised. He'd thought they'd at least ask questions.
They did. They asked if they the spy network was official now.