Gideon

Gideon is the main antagonist (later anti-hero) of the second half of Story of the Saviors. He is the adoptive brother of Rosalie Swan-Jones and son of Belle and Rumplestiltskin.

History
Gideon, like his sister, Rosalie was in danger when they were in the Underworld. His father in a previous deal had signed off his second-born child, thus ruining his chance at another child with Milah's baby.

In early 2014, Mr. Gold and Belle re-consummated their marriage. After they re consummate their marriage, Belle becomes unknowingly pregnant with Rumplestiltskin's second-born child. Gideon's mother is left in Storybrooke when his father goes to the Underworld with Emma Swan (who is unknowingly pregnant) and her family.

Belle learns that she is indeed pregnant, but is upset when Rumplestiltskin tells her the deal he previously made.

Later, realizing Hades can just take Gideon whenever he wants, Belle puts herself under a sleeping curse with the help of Zelena to prevent her from aging. However, she makes Gold swear to not use dark magic to get out of this entire thing.

Rosalie Swan-Jones
Rosalie is older than Gideon. Despite acting the older of the two, Rosalie's mother was impregnated first before Gideon's mother. However, since Rosalie is now fourteen and he is twenty eight, Gideon is physically older than her.

Emma suddenly gives birth to Rosalie shortly after Belle and they are both sent away. While growing up, Gideon and Rosalie were best of friends, often comforting each other every night. However, fear to losing Rosalie, Gideon gives her squid ink and a magic bean to transport herself out of this dark realm.