Board Thread:General Discussion/@comment-27079851-20161207035158/@comment-31231929-20170427001526

I have a guess about how Fiona became the Black Fairy:

Fiona the Yellow Fairy had a relationship of sorts with Malcom and as a result gave birth to Rumplestiltskin. Not long after Rumple was born, he was visited by his fairy godmother, Tiger Lily who tells Fiona that Rumple is destined to become the greatest evil. Fiona, not wanting that for her child, decides to take on Rumple pre-destined evilness through a difficult and dangerous magical process. Before she does this, Fiona gives Rumple to Tiger Lily so that his father can raise him. Once the process is finished, Fiona's soul is corrupted and her magic has turned dark. The loss of her child and the darkness in her soul causes her to begin stealing children to try and fill the void left in her heart. The Blue Fairy, who at the time did not know of Rumple finds out what Fiona did and banishes her to Neverland. When she arrives, the complete evilness of her soul somehow creates a new realm within Neverland, the Dark Realm. When Black disovers there are dark fairy crystals there, she begins to formulate the Dark Curse using child labor to mine the dust.