Tula Marius

Tula is Orm's younger half-sister on their father's side. She is the illegitimate daughter of the Atlantean military leader Orvax Marius and an unnamed mistress. Through her father's side Tula is the half-sister of Ocean Master. Like all Atlanteans Tula's heritage affords her with the abilities to survive in the crushing depths of the ocean.

Nothing is known of her relationship with her father, who became King when he married Queen Atlanna. When her father died her brother Orm was crowned King. Tula served under Orm as the captain of the Drift, a covert team of Atlantean special-ops soldiers. When Orm was deposed by Tula's step-brother Arthur she briefly continued her role as captain of the Drift. Eventually she gained Arthur's trust so he promoted her to Regent of Atlantis.

When Arthur was ousted from the throne by Atlantean extremist Corum Rath, Tula was also arrested for siding with him. However Tula managed to escape captivity and journey to the surface. She now lives in Curry Lighthouse with her step-brother Arthur and works at the boatyard in Amnesty Bay. She was a member of the Drift, and later a Drift Captain. Tula earned Arthur's trust after she admitted to participating in an aborted rescue of her brother and after she aided Mera in uncovering an assassination plot. Arthur later appointed Tula regent of Atlantis, when his duties as Aquaman took him away from Atlantis for extended periods of time. Tula's reign as regent was cut short due to a coup by Corum Rath, former leader of the Deluge, who believed Arthur's surface sympathies were too progressive and harmful to Atlantis. Tula traveled to Amnesty Bay with Mera and found a life among the surface dwellers.