Adam Millagan is a supporting character in Supernatural. He is the younger half-brother of Sam and Dean Winchester and the son of John Winchester. He appears as a minor character in season 4 and a supporting character in seasons 5 and 15.

Emma was conceived during a night hook up from her mother and father. Lydia was impregnated by Dean and after their night, the next day, Lydia was already in a nine months pregnant state. Madeline and the other Amazons arrive for the ceremony of Emma's birth. Madeline was the one to name Emma after the child was born.