A wicked old witch who lives in the Gillikin Country of the Land of Oz. She had once conquered and ruled the Gillikin Country as the Wicked Witch of the North, only to be deposed by the Good Witch of the North. She enchanted Ozma and remained her guardian after being deposed, in order to prevent her from ascending to the throne.

Mombi

A wicked old witch who lives in the Gillikin Country of the Land of Oz. She had once conquered and ruled the Gillikin Country as the Wicked Witch of the North, only to be deposed by the Good Witch of the North. She enchanted Ozma and remained her guardian after being deposed, in order to prevent her from ascending to the throne.

All data from the awesome folks at Marvel.