King O'Hedge is the father of Robert O'Hedge, and his predecessor as ruler of the Kingdom of Mercia. King O'Hedge's family had ruled Mercia for generations, ever since Sebastian Acorn helped resolve a power struggle in the land in their favor. His rule was known to have had sad effects on the family of Mighty and Matilda the Armadillos, whose parents he had imprisoned for thievery. King O'Hedge also decreed Mighty's banishment after the latter's attempt to free his parents. Sadly, one of the king's own advisers, Mordred Hood, despised the king and his family, and eventually joined the Eggman Empire as Grandmaster of the Mercia Dark Egg Legion. The kingdom fell during the reign of the original Dr. Robotnik, and the crown passed to O'Hedge's son Robert, with his own fate remaining unknown. (CSE, SU: #46)
- As he appeared only in flashback sequences, King O'Hedge's first name is unknown, and will presumably remain so due to the apparent removal of various characters involved in a copyright dispute between Ken Penders and Sega and Archie Comics.
- As King O'Hedge's son Rob is known to have a counterpart from Moebius who had a brother, it is possible that King O'Hedge had multiple children-however, none were known to exist on Mobius.