Arthur will be the Once and Future King, uniting all the lands of Albion and bring magic back to the land.
In the TV series his prophecy was to guide Arthur in becoming a great King of Camelot! And I think that was his role within the Arthurian Legend but to more metor him into becoming a great King because in the Legend Merlin was depicted as a lot older than Merlin hense the mentoring!
Instead of searching for answers on here, why dont you just go read the book? Noobs -.-
Arthur hasn't YET. Only Lancelot, Gaius, Merlin's mother, Merlin's friend from his old village Will and Merlin himself (obviously) know that Merlin is a sorcerer. Lets keep our fingers crossed that Arthur does find out, If Merlin tells Arthur, imagine Arthur's face, or if Arthur realizes Merlin is a sorcerer and confronts him, imagine Merlin's face!! Added by Queen Arwen: Arthur may not have found out yet, but apparently he will in Season 5. This is from reliable sources, and is not just hearsay!
Stephen Dillane was Merlin in 2004 movie King Arthur.
Arthur doesn't know yet.
he is a wizard from the time of King Arthur. Merlin helped raise King Arthur
Merlin, is a wizard and a great friend of King Arthur.
Merlin was Arthur's tutor when he was a child in the care of Sir Ector. Merlin was the one who brought Arthur to Sir Ector from Arthur's mother Igraine. Merlin is responsible for educating Arthur to be the king he is supposed to be.
merlin the enchanter was the person who raised king arthur and helped him
They met in King Uther's castle and they ended up fighting, Merlin didn't realise that Arthur was the prince.
Merlin
no but she has seen him!