Warning: SPOILERS for Aquaman

Even before Aquaman was projected to have one of DC's biggest box office openings yet, the odds of Aquaman 2 being made were higher than most. The solo film from James Wan promised spectacle, adventure, and plenty of badass action courtesy of its star, Jason Momoa. But now that the movie has arrived, it's clear just how well Aquaman's ending sets up a direct sequel that could blow the first film out of the water.

With the future of DC's Justice League completely unknown, Aquaman 2 may also be the most likely place to see Arthur Curry's story continue. With Mera at his side, the trident of Atlan in his hands, and the throne of Atlantis beneath him, the future sure seems bright. But with the villains just as primed for a second round, Ocean Master and Black Manta biding their time, and new threats already emerging, it isn't hard to see where Aquaman 2 could head. Provided fans look beyond the happy ending to Aquaman's after-credits scene, for a start.

King Arthur Finally Rules Atlantis

Aquaman Movie Poster Aquaman Classic Costume

There's no question that the popularity and attitude of Jason Momoa guarantee he will anchor the sequel no matter what the story, having ascended to his birthright by the end of Aquaman. With the trident of King Atlas recovered, and the dead king's armor to boot, Arthur more than looks the part. And as Mera explains in the movie, he has claimed the throne by the most sacred traditions of Atlantis.

But the rush of seeing Arthur victorious shouldn't brush away the biggest questions, or the most pressing concerns. As the final scene of the movie alludes to, Arthur doesn't know how to be a king. And even if that makes him morally fit for the power it brings with it, the fact remains: he is not prepared for the job. He has help, sure, but don't expect a sequel to establish that the military of Atlantis and Xebel is just fine being led by the man who killed their former, mighty, disciplined commander. King Arthur is in for a bigger challenge than he has ever faced before... and that's before the real conflict puts his skills to the test.

Our Aquaman 2 Prediction: Arthur learns that keeping peace is harder than winning it - and one way or another, loses the throne.

Mera Protects The Empire

Amber Heard as Mera in Aquaman

From the looks of it, much of the heavy lifting will be done by Mera, who is clearly informed on the current state of the world and Atlantis, and isn't shy about making her opinions or wisdom known. No matter how perilous Arthur's grasp on the crown and trident of Atlantis may become, Mera is his best bet on keeping hold of it. Unless, of course, the people decide to make Mera their queen as the person most fit for the job - as they did in the world of DC Comics.

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We'll assume Mera would support Arthur as king for the foreseeable future, and likely start to build one of the most well-known romances in the DC Universe. Power couples aside, as the most knowledgeable resource for Atlantean politics, Mera will know better than anyone just how long a united Atlantis can actually last. The once singular empire split up for a reason, so expect Mera to be the conscience explaining the nuances of Atlantean politics to King Arthur every step of the way. And, as the first Aquaman movie shows, using her powers to maintain order by force, if necessary (better than anyone else in Atlantis ever could).

Our Aquaman 2 Prediction: Mera is the one left holding the empire of Atlantis together - perhaps even as Queen.

Queen Atlanna Stands By Arthur's Side

Nicole Kidman as Atlanna, holding a trident in a poster for Aquaman

The return of Queen Atlanna is obviously a boost for Arthur's emotional well-being, but her experience as Atlantean royalty may be more practical in the long term. For starters, teaching Arthur how to wield his trident in combat. He performed admirably against Orm, but that was out of the water. Atlanna proved her own battle proficiency in both defending Arthur and surviving multiple showdowns with the Karathen. So training sequences are completely possible, meaning Arthur can grow deadlier still with his trident.

As for political advice... well, the fact that Atlanna has been out of the loop for two decades could be a source of conflict in Arthur's rule and leadership. Mera believed in the lessons Atlanna taught her and Orm, but they were children then. What would it take for Atlanna and Mera to stand opposed to a modern political dilemma - and whose side would Arthur be tempted to take? Fans may wish to see everybody just get along, but that's never been the status quo in the comics, so why should the movies be any different?

Our Aquaman 2 Prediction: Queen Atlanna learns how much has changed in tragic fashion, and loses her son once again.

Of course, tracking where the many villains of Aquaman wind up, Arthur could have far bigger problems than managing a kingdom when Aquaman 2 launches a new attack.

Page 2 of 2: The Likely Villains of Aquaman 2

Ocean Master Isn't Defeated Just Yet

In the film as in the comic books, defeating Ocean Master doesn't mean he's taken care of permanently. And even before Arthur extends an olive branch to his handcuffed brother, promising that they will "talk" once the dust settles, the pieces are still on the board that would lead to Orm's return. Remember: his main argument for war was that the surface world was terrible, vile, and oblivious to the damage they cause. And that is guaranteed NOT to change no matter who sits upon the throne of Atlantis. So jail cell or not, Orm is going to have his supporters who agreed, and still agree with his viewpoint.

King Nereus said it best: the war with the surface world was going to come sooner or later, so it's safe to assume that others share the opinion (if not most of Xebel). The comics have kept Orm a persistent threat by putting him on a permanent hunt for artifacts or weaponry that could turn the tide, or forcing Atlantis and the surface world into open war, knowing Atlantis would prevail. There is still a chance that Aquaman 2 could Unite Orm and Arthur in a common cause. But even if it did, the fact that he fundamentally disagrees with Arthur about the way to protect Atlantis means he's a threat that never goes away. Definitely not in a direct sequel, that's for sure.

Our Aquaman 2 Prediction: When Arthur falls, Ocean Master is the only person Mera can turn to for help.

Black Manta Still Wants Revenge

Black Manta with glowing eyes in Aquaman (2018).

The after-credits scene of Aquaman makes it obvious that Black Manta is still being set up as Aquaman's greatest villain, which he is in the comics (Orm being more of a "rival" than a nemesis). And lest any fans forget, Manta still has a suit of armor outfitted with Atlantean technology, weaponry, and the knowledge to use it. Having proven his knack for assembling and leasing special ops soldiers into combat, and a mastery of arms manufacturing, Black Manta could bring a whole lot more than a squad of commandos for his next showdown with Aquaman.

RELATED: Aquaman Director Reveals Scene That Was 'Too Out There'

Whatever tools he may use to launch his attacks, though, it's Black Manta's motivation that makes him an ever-present, supremely dangerous threat to Aquaman and by extension, Atlantis. The need for revenge upon Arthur for killing his father isn't going to go away any time soon... and now that Aquaman's mother has just returned from the dead, we would say Manta has the best chance yet at breaking Arthur's heart to match his own. And now, he has help.

Our Aquaman 2 Prediction: Black Manta gets his wish, and makes Aquaman's loved ones watch.

Dr. Shin Will Help Manta Get It

Few would believe it based on his brief appearances as a crackpot Atlantis truth-er on network news in the movie, but Dr. Stephen Shin (Randall Park) may actually pose the greatest threat to Aquaman and his people. Not just as the person who saves Black Manta so that he can live to kill Arthur, but for being more determined than anyone alive to expose the existence of Atlantis to the entire world. With help from Black Manta (knowledge of their technology, their preferred places of weapons exchanges, etc.) he might just be able to do it, too.

The version of Dr. Shin in the movie is already less sympathetic than his comic book version seen in DC's New 52, where he played a sizable role in the childhood and upbringing of Arthur. In the end, his desire to know more about Atlantis - and prove to the world that he never should have been discredited for seeking it - drove him to betray Arthur and his closest friends. If Arthur and Manta are both blunt instruments, expect Stephen Shin to be the brains behind whatever attack is ultimately launched.

Our Aquaman 2 Prediction: Dr. Shin gets as used as everyone else, and winds up regretting exposing Atlantis to the world.

Don't Count Out King Nereus, Either

Last but certainly not least, fans shouldn't assume that King Nereus is permanently at home under Arthur's "ally" column, either. He may be the first to support Arthur as king based on his capture of the trident, but all that really proves is that he knows when he's picked the losing side of a battle. The version of King Nereus in the comics was a proud, shrewd operator, so it's safe to assume the movie version will be, too. Even if they did change his character to make him Mera's father, and not her husband. But that change may actually prove he's a threat to be watched, based on the themes of James Wan's first crack at the Aquaman mythology.

The driving force of the film is a parent's hopes for their child, and no matter how you put it, King Nereus was just forced to kneel before a half-breed outsider, illegitimate son of his nation's longest political rival... oh, and who his daughter will probably marry eventually, too. If Black Manta, Ocean Master, Dr. Shin, or anyone else is looking to make a powerful ally in their plan to bring Arthur down, King Nereus may only need an opportunity to become antagonist to Arthur's budding rule.

Our Aquaman 2 Prediction: King Nereus plays the part of Ocean Master in the sequel, doing the wrong thing for the right reasons.

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The heroes may be celebrating the bright future that now awaits them as the new rulers of Atlantis, and anticipating the "fun" they will have. But fans can take their pick of which figures inside and outside of Atlantis have the means, motive, and opportunity to shift the balance of power all over again. Atlantis is a world of mystery and lost history, after all. All things considered, King Arthur may not have the slightest idea of what's about to hit him, come Aquaman 2.

MORE: Every Aquaman Easter Egg & Secret You Missed

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