Merlin

"Long before your stories began, the Sorcerer battled the darkness. He was able to keep it from consuming the realms."

- The Apprentice to Emma

Merlin, better known as the Sorcerer and also known as the Usher, is a character on ABC's Once Upon a Time. He débuts in the nineteenth episode of the fourth season. He is voiced by co-star Jonathan Adams in Season Four, and is portrayed by guest star Elliot Knight in Season Five.

Merlin is based on the character of the same name from the Arthurian Legend, and on the Sorcerer from the poem, "The Sorcerer's Apprentice".

Trivia
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Etymology

 * The name "Merlin" is of Welsh origin and is derived from the name "Myrddin", meaning "sea fortress".

Character Notes

 * According to Rumplestiltskin, he is thousands of years old. This makes him one of the two oldest known residents of Fairy Tale Land, with the other one being the Apprentice.
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Production Notes

 * The casting call describes him as "an African American in his early 30s to early 40s and boasting a natural British accent to play a man with great wisdom and intelligence beyond his years, someone who has always put duty in front of his own desires, even at great personal cost".
 * According to Adam Horowitz, the idea of exploring Merlin has been cogitated since 2013, just not immediately.