Board Thread:General Discussion/@comment-25823557-20141209075410/@comment-24674051-20141209204713

Yen Sid is the name that has come to be associated with the Sorcerer that appeared in the Fantasia version of the Sorcerer's apprentice. and as others have pointed out, it is simply Disney spelled backwards.

Based on how the story arcs are currently going, I think the Sorcerer is going to end up being an arch-enemy to Rumple (and therefore, one of the good guys). We might get introduced to him at the end of this season, but I get a feeling that he will be around for 1 or 2 seasons before the final showdown between the Sorcerer and the Dark One.