Richard Crouse

Jason Mamoa returns as the universe’s most famous merman in “Aquaman and the Lost Kingdom,” the last film of the DCEU, now playing in theatres.

“I’m the King of Atlantis,” says Arthur Curry / Aquaman (Mamoa). “Half a billion from every known species in the sea call this place home. But that doesn’t mean they all like me.”

Angriest of all the seafarers is David Kane / Black Manta (Yahya Abdul-Mateen II), a pirate and high-seas mercenary who holds Arthur responsible for the death of his father. Jesse Kane perished when his hijacked Russian nuclear submarine flooded with water. Aquaman could have saved him, but refused. Now, Black Manta wants revenge and is prepared to use the dark magic of the cursed Black Trident to get it.

“I’m going to kill Aquaman,” he says, “and destroy everything he holds dear. I’m going to murder his family and burn his kingdom to ash. Even if I have to make a deal with the devil to do it.”

Like I said, he’s angry.

To stop Black Manta from destroying everything important in his life, Aquaman decides to join forces with his estranged half-brother Orm Marius / Ocean Master (Patrick Wilson). Trouble is, the former King of Atlantis is being held in a desert jail for crimes against his old kingdom. Wearing a camouflage suit, Aquaman liberates Orm, and reluctantly, the former king agrees to battle Black Manta.

“I don’t know what lies ahead,” says Aquaman as they begin their adventure. “But we can’t leave our children in a world without hope.”

“Aquaman and the Lost Kingdom” has the vibe of an episode of the Saturday morning cartoon “Super Friends.” A mix of goofy humour and action, it delivers spectacle, but ultimately feels like it is hobbled by too much exposition, too much muddy CGI, not enough character development and not enough Black Manta. After a messy first hour of set-up, it catches a wave in the second half, but even when it picks up, the stakes are never high enough to match the first drama of the first film.

Mamoa is game. He understands that Aquaman is a mix of kitsch, charm and action chops, (“There are those who think I’m ridiculous,” he says.), a mighty underwater superhero who rides around the sea courtesy of a giant sea monkey, but the tonal shifts, whether because of reshoots or rewrites or just jerky editing, often make for disjointed viewing. The fine balance of humour and emotion isn’t as carefully calibrated here as it was in the first movie, and the character’s sudden temperament swings, from beast mode to jokester, are jarring.

Abdul-Mateen II is underused. He’s a villain with relatively little screen time whose thirst for retribution is matched only by his ability to make the silly, retro-sci fi Black Manta suit look cool.

Many movies have been fuelled by revenge, but here it quickly becomes a McGuffin, the thing that gets the movie in motion, but is soon forgotten as other plotlines crowd it out of the picture. His scheme to speed the warming of the planet by detonating his store of orichalcum fuel, is the work of a supervillain for sure, but is underdeveloped. “It has to be stopped,” says Atlanna (Nicole Kidman) in a textbook definition of understatement.

Of the supporting characters Wilson is given the only character arc. From disgraced leader to unlikely hero (no spoilers here), he’s as stoic as Aquaman is playful, but, nonetheless, delivers the film’s funniest scene (again no spoilers here, but it would not be out of place on the icky reality show “Fear Factor”). His presence, however, allows the film to explore a redemption storyline that gives the otherwise generic plot a bit of juice.

Amber Heard fans, and haters, may be divided by her appearance. Supporters will think she is underused, while the haters will think she takes up too much screen time. Suffice to say, she is a supporting character who appears throughout, but has little to do with the main action.

“Aquaman and the Lost Kingdom” has its moments (stick around for the amusing mid-credit scene), but the script’s choppy waters, and a low stakes storyline offer a low reward.