Lady Dorma

Lady Dorma is an Atlantean.

Biography
After Namor kidnapping Invisible Woman of the Fantastic Four, Lady Dorma criticized his decision of allowing a surface dweller in Atlantis and even filling a room with oxygen just for Sue.

Out of jealously, Lady Dorma convinced Namor's army into betraying him and attacking earth, but she got a change of heart and intercepted a blast directed towards Namor, who was helping the Fantastic Four save their city.