Rose McGowan appeared on Once Upon A Time as the younger Cora, Michael Raymond-James was also on Once Upon A Time as Rumplestiltskin's son Baelfire/Neal Cassidy.
Rose McGowen and Billy Zane previously worked together on Charmed (TV show). Rose McGowen played a whitelighter-witch and Billy Zane played a demon turned human.
On Charmed (1998) where Rose McGowan had her 3rd episode, her character, Paige cast a spell that had consequences, her breasts grew and Phoebe, her sister, made a comment. She said "Betty Boop". Billy Zane also appeared on the show 3 years later.