Merlin is a wizard and ally of King Arthur of Camelot. He is a vital figure in the origin of Etrigan and Shining Knight, but as a mythological character, has appeared in other stories well before that. Though commonly depicted as Myrdin Wyld, son of the demon Belial with knowledge of the future, earlier adventures with Superboy and Jimmy Olsen pegged him as an ancestor of Mister Mxyzptlk, and in Connecticut Yankee-style stories, he is a jealous and spiteful (not to mention treacherous) sorcerer.
Merlin first appearance in DC Comics was in New Comics #3, in Rafael Astarita's King Arthur stories (1936).
Other Versions
Earth-One
Imposter
Vertigo Universe
Vessel
Multiverse
The New 52
Post-Crisis
Pre-Crisis
Earth-97
Tangent Comics
Elseworlds
Other Media
Super Friends
Comics-only
See Also