Kordax technically became the last literal villain of the DCEU, but unlike what they probably originally planned, it was definitely not Darkseid or any other Omega-level threat. Instead, it was just an Aquaman villain that not many people knew very well, as he became the major antagonist of Aquaman and the Lost Kingdom, the final movie in the film series and movie universe. He was supposed to be the dark, twisted brother of King Atlan, one of Arthur’s ancestors who sat on the Atlantean throne.

There is a whole bunch of stuff involving a black trident. Kordax needs the blood of one of Atlan’s descendants, which leads him to go after Aquaman himself so that he can take the throne. Even though he does not have a physical body, he is still able to manipulate and corrupt people, such as Arthur’s brother Orm, who was finally starting to have a good relationship with his half-sibling.

But once he gets his body back, he is not just a regular merman like he used to be. He becomes something more like Sauron mixed with an Ent, with a whole bunch of dark magic that somehow is green for some reason. In some ways, the CGI is really impressive, but it also comes across as kind of goofy-looking when seen on the big screen.

The whole climax with him is rather wishy-washy in its execution. He is presented as a threat that everyone needs to take seriously, especially after he gets his hands on his black trident.

However, the battle against him is surprisingly short, with Arthur throwing his golden trident at him and breaking the black trident. This causes Kordax to die a more permanent death this time around. In the end, he became a fitting villain for the DCEU, representing something with a lot of potential but very poor execution. It is also worth noting that this version of the character is much different from the one in the comics.