Ruthless and bloodthirsty, Orm Marius will crush anyone who stands in the way of his ascent to the Atlantean throne, even his own half-brother, Aquaman.
Cain and Abel. Zeus and Poseidon. King Richard and Prince John. Ever since the beginning of time, there have been tales of brothers vs. brother. And the underwater kingdom of Atlantis is no different, having given rise to the legendary rivalry between Arthur, King of Atlantis, and his half-brother, Orm Marius, who is better known as the Ocean Master.