Fan Casting Orm Marius in Aquaman: Underwater Warfare

Orm serves as Atlantis's premier weapons expert and trains soldiers in combat, he's also Arthur's half brother and Orm felt like he should've been the heir the throne, he believes Arthur's brash attitude is responsible for the current predicament and previous conflicts and he believes he's not as focused on Atlantis as he should be but he often refrains his judgment since Atlantis is in his best interest.