It's mere coincidence, but...

[ladracul]

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Mattel finally revealed "Ever After High", a spinoff of "Monster High" (Amore Cupid being the character that ties them together) and some of it resembles a popular TV series.

I'm not saying they've ripped it off, toy lines take about 3 years to develop, so it was probably conceived a year before OUAT was aired. Still, some of it is awfully similar. (Though I can see some of "Wicked" in the webisode told from Raven's POV.)