Merlin is a powerful magician that works as a servant in the kingdom of Camelot.
During his service in the kingdom, Merlin looks after a young girl named Morgana le Fay. Morgana is a witch that needs help practicing magic. Therefore, Merlin takes Morgana under his wing and teaches her the sacred art of sorcery.
For years, Merlin looks after Morgana with love and care, until she betrays him by dabbling in the dark arts. Merlin tries reaching out to Morgana by warning her not to tamper with dark magic, but his warning is not heeded.
Unfortunately, Merlin is betrayed once again, this time by Horvath. He distracts Merlin after he appears to have Morgana beaten. Morgana then stabs and mortally wounds Merlin. As he is dying, Merlin gives his Dragon Ring to Balthazar. He also charges him to find the Prime Merlinean, the only one who could destroy Morgana.
"We are but servants." - Merlin to his former apprentice, Morgana le Fay.
Merlin is based on the legendary wizard with the same name who existed during the time of King Arthur.
This is the second Disney version of the character Merlin, with the first being Merlin from The Sword in the Stone, who served as inspiration for this version of the character.
According to the movie, Merlin existed around 740 AD.