The ruler of the ice kingdom of Morainia and father to Princess Janice and Prince Esker.

One day King Boreas contacted King Randor that his people developed energy crystals ten times more powerful than any found on Eternia and wanted Randor Kingdom to be the first to use them. Adam Cringer and Orko were sent to get the crystal, meeting Boreas and his children.

Meanwhile Skeletor, Beastman, Clawful and Trap Jaw made it Moroinia to take the crystal for themselves. King Boreas tries to stop them but was capture by Skeletor. who demanded that Prince Esker and the council give the energy crystals to him in exchange for their king.

It was thanks to Princess Janice and He-man that King Boreas was saved.