Emma Swan

The only one who saves me is me.

-Emma to Killian Jones

Emma Swan is the main female protagonist of the first six seasons of Once Upon a Time. She was briefly the main antagonist of season 5a until she is revealed to be an anti-hero and finally the main protagonist again.

In season five, Emma becomes the Dark One and embraces the Darkness inside of her after turning Hook into a Dark One.

Throughout the Series
In order to rid herself of this darkness, Emma realizes she can free Merlin with a tear of lost love. She rips out Violet's heart and tells her that she must break Henry's heart. Unfortunately for Emma, Bilbo and Pippin heard the entire thing. Emma apologizes and wipes their memories of it ever happening while apologizing that she's sorry for doing so.