SPOILER WARNING: Plot details after Beyond The Impossible #172

The Winter Kingdom is a sector of the Olympian Galaxy under mortal rule. Gaining freedom from divine rule during the creation othe Alliance and initially part of the Mortal Republic, it separated as part of the Guild sector. After the Winter King left the Guild, several planets swore allegiance to him creating an independent new sector.
SPOILER WARNING: Plot details of Beyond The Impossible #255

After a failed invasion of Earth, the Winter King was succeeded by the Ice Queen.

First appereance: Beyond The Impossible #172

Capital world: Boreas

Affiliation: sovereign mortal sector

Form of government: monarchy, possibly constitutional

Known facts: most of the territory was once under Hephaestus rule. By the time of the invasion of Earth, the Winter Kingdom included 247 worlds.[1]