Eochald Bres helped to usurped the crown of Thiera Na Oge from her sister, Nuada Silverhand
. At that time she crossed swords with Aquaman
when Ocean Master
stole a powerful artifact from the city. Aquaman and Nuada defeated Ocean Master and the artifact was returned.
Bres and Nuada both reappeared later in Aquaman's book. At that time Bres lost the throne and it was retaken by Nuada. Bres threw in her lot with some aliens appearing in that story arc, but she did not survive the story.
Atlantean physiology, elemental sorcery.