Son X

"Darkseid but you got away"

- Son X when he gets shocked about Darkseid's Return Son X is a character in ABC's Once Upon A Time

he is Writer X's Son

meeting the son
Writer X said that Darkseid had Captured Son X so then Batman thought of a plan so they sneeked in to Darkseid's Hideout and then Hulk attacked Darkseid and Saved Son X

Trollwick's Scrolls
Son X was seen on one of Trollwick's Scrolls