Meg Masters is a fictional character on The CW Television Network's drama and horror television series Supernatural. Created by the series' writers to develop a story arc for the first season, Meg is an unnamed demon who assumes the name of the host she possesses and begins antagonizing the series protagonists Sam and Dean Winchester. Nicki Aycox portrays her in the first season. The writers wanted Aycox to reprise the role in later seasons, but ultimately cast Rachel Miner for storyline purposes. Miner's incarnation evolves into an ally of the Winchesters' and the angel Castiel's over the course of the sixth, seventh, and eighth seasons. The character received generally mixed reception from critics, with many favoring Aycox's version.