Once Upon A Time featured characters at odds more often than not. Sometimes these feuds were stellars, so I thought I would list the best ones.
5. Snow VS. Regina
Regina's confident stride that breaks up Snow and Charming's wedding was the perfect set up to explain their relationship. Things had not been good between them since briefly after they met when Snow White was a child. Regina's curse, while torturing nearly everyone in the Enchanted Forest by bringing them to a land without magic, had been designed with the intent to keep Snow unhappy forever. While Snow attempted to reach a hand out to Regina to make peace, things never worked out that way until a while after the curse had broken.
4. Emma VS. Regina
Emma and Regina had every reason to hate each other when they met. Emma was concerned about Henry and how he described Regina's parenting style. Meanwhile, Emma was Henry's biological mother and threat to Regina's relationship with him. After discovering that the curse is real, Emma faces Regina's actions toward her parents. Their rivalry is one of the best because while it does include Regina's past with Snow and Charming, it is also heavily based in the present and how to handle co-parenting Henry. Early on, it was entertaining to watch to the two attempt to outsmart each other.
3. Regina VS. Rumple
As two the most intelligent and manipulative characters on Once Upon A Time, when Regina Mills and Rumpelstiltskin were on the same side, they were a terrifying match. However, they were just as dangerous as enemies. When on opposing sides, Rumple and Regina had a way of using magic and manipulation to get the other to do what they wanted. However, watching them outwit each other was like viewing an intricate and and carefully thought out game. In the end, their relationship had gone through so many stages that they understood each other better than anyone else.
2. Rumple VS. Hook
Of all of the rivalries on Once Upon A Time, this one was certainly the longest. Lasting for centuries, things initially went wrong after Milah fell in love with Captain Hook. Wanting a life of adventure with a confident man, rather than the coward she considered Rumple to be, Milah was the reason the two men became enemies. After becoming the Dark One, Rumple returned to Hook and Milah's life one last time, and when the fight was all said and done, Milah was dead, and a life long rivalry had officially begun. Even after both men had moved on from Milah, she still influenced their dynamic.
1. Regina VS. The Evil Queen
Regina's decision to split her evil self from her good causes mayhem all over Storybrooke. As the Evil Queen has not been destroyed, and without Regina's re-built conscience, the Evil Queen had nothing to stop her from going after Snow White. Regina's internal conflict became a physical one as she had to figure out a way to defeat the worst parts of herself. Finally given a chance, Regina realised the best way to beat the Evil Queen was to accept the dark parts of herself. Giving the Evil Queen some of Regina's light, both versions of Regina have light and dark inside them.
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