Lilith "Lily" Page is the daughter of Maleficent in Once Upon A Time.
She was banished from the fairytale world to the real world by Snow White and Prince Charming, she was adopted by a couple when she was just a baby, as a teen she make friend with Emma. But she was a trouble teen, she was lying to Emma about her parents and steal people, she also make Emma lose her adoptive family after they discover who she was.
In her adulthood she take a fake name as waitress and tell Emma to leave her alone and be with her daughter, but Emma and Regina discover the lies and find out that she discover the truth about Emma past and discover the town of Storybrooke, Emma tried to stop her with the car Lili then get angry telling that without her magic Emma is nothing, Emma wanted to kill her, but Regina interverne and Lili escape during the two woman argument.
She wanted to get her revenge by tranforming herself to a dragon betrayed by Regina after she reconciled with Emma, her mother then tried to reasoned her and she did, she finally make peace with Emma and Storybrooke inhabitants.