- Alternative Character Interpretation: There's a lot of ambiguity on what exactly Lex Luthor is up to. He claims to have been feeding info to Lois since the beginning but his line after the brainwashed Batman figures it out implies he might have been just hedging his bets by playing both sides. Not that it saves him.
- Angst Aversion: Many reviews give a very clear warning that this film is very violent and people should steer clear if they can't stomach it.
- Author's Saving Throw: One point of contention in the earlier movies was how Damian Wayne was able to defeat guys who should realistically be stronger and more skilled than him, up to and including Batman himself. In this movie, a brainwashed Batman beats down Damian, admits he was holding back and that he let Damian win in the past, and establishes himself without a shadow of a doubt as Damian's superior in combat.
- Broken Base: Either the film is an Even Better Sequel and an awesome conclusion to the DCAMU for the various risks it takes such as most of the cast being non-Leaguers/non-Titans, allowing them to take the spotlight instead or is an edgefest that disservices beloved characters by giving them overly violent and unceremonious deaths/fates, sealed with a Reset Button Ending Aversion.
- Catharsis Factor: After seeing all the horrific things Darkseid has done to the heroes and the Earth, it's very satisfying to watch the Invincible Villain get beaten and overpowered by Trigon, of all people.
- Ending Aversion: The entire Animated Universe ends with a Pyrrhic Victory as most of the heroes are dead, insane, or crippled and the Earth left near-inhospitable. This leads to Constantine convincing Flash to go back in time and prevent the tragedy from happening, which will change the entire timeline. Many fans feel that this makes the entire DCAMU not worth watching or getting invested in.
- Ensemble Dark Horse:
- Etrigan as a bored and drunken Deadpan Snarker Blood Knight is a lot of fun.
- King Shark quickly garnered a large fandom due to the Signature Scene revealing he and Constantine used to date, and that their relationship ended on good terms.
- Captain Boomerang for delivering some of the funniest moments in the movie. His role as the Plucky Comic Relief who for once doesnt turn his back on his teammates was well-received in such a dark film. Bonus points for kicking ass against Paradooms.
- Even Better Sequel: This installment has been much more positively received than many of the DCAMU movies that came before it, with many reviewers praising the action sequences, animation, and performances. It is considered a worthy finale to the current DCAMU that manages to tie together many different elements of the universe- including the Suicide Squad, the Justice League and the Dark characters- into a massive, mostly satisfying Crisis Crossover. However, it did receive some criticism for its overly dark tone and for ending the franchise with a Cosmic Retcon.
- Fanfic Fuel: Two years have passed since the failed invasion plan and one wonders what events occurred and what was everyone doing during those two years.
- Fan-Preferred Couple: Constantine spent the entire movie obsessing over Zatanna - made heartbreaking with her death, but a lot of fans were surprisingly rather cool towards the pairing (feeling it made him too unlikable) and instead hoped that he and King Shark would get back together.
- Friendly Fandoms: With fans of the early Darker and Edgier DC Extended Universe movies, particularly those directed by Zack Snyder. A number of these fans have praised the movie as the closest thing they'll likely get to Snyder's original five-film arc (which was Cut Short due to the financial underperformance of Snyder's films relative to their massive budgets).
- Hilarious in Hindsight: Superman donning Lex Luthor's war suit due to being depowered becomes this when, in the same week this movie was released, his cousin in the Arrowverse does the same thing in the latest episode of her show.
- Just Here for Godzilla:
- Like You Would Really Do It: Plenty of main characters are Killed Off for Real, on-screen and in the most gruesome ways. But as the film's body count climbs to insane heights, Earth is reduced to ruin and even the entire Green Lantern Corps is annihilated, it becomes increasingly obvious that the story can only end with a Cosmic Retcon. This goes double for anyone familiar with DC Rebirth replacing the New 52.
- The constant axing of characters at random can come off as this due to how unceremonious and gory they are, such as Lady Shiva getting killed by a random sniper.
- While the characters themselves are quite fearsome and manage to kill a good chunk of the cast, Darkseid's elite warriors being called "Paradooms" still makes it kind of hard to take them seriously.
- Narm Charm: Is Clark's costume spontaneously forming on him when he purges Trigon's possession and regains his powers mildly goofy? Yes. Does that diminish the awesomeness of seeing Superman reborn? Not a chance.
- Nausea Fuel: The movie turns the Squick Up to Eleven with very graphic sequences, like dismemberment, characters being ripped apart, and a lot of blood.
- Older Than They Think: Constantine's former relationship with King Shark isn't all that new, considering his comic version's habit of Anything That Moves since the 90s.
- Signature Scene:
- The scene where it turns out Constantine used to date King Shark quickly made rounds on social media, particularly when King Shark gives him a wink.
- The shot of Starfire's disemboweled corpse also circulated around as the biggest show of proof of the movie's gruesome nature, especially since Starfire is widely known for her cheery and upbeat personality.
- Robin/Damian confessing that he has feelings for Raven and had for a while. Raven bringing Damian back to life and saying she loves him. Damian and Raven sharing their first and last kiss as Flash creates another Flashpoint.
- Finding out Zatanna spelled Constantine to leave the first fight because they would need him if there was ever hope for the remaining hero's to win in a second attack. Zatanna bringing Constantine back to life so he and Raven can release Trigon to fight Darksied.
- The Justice League being brutally torn apart by Darkseid and his Paradooms, due to the graphic deaths of some of DC's most beloved heroes.
- The final battle between Trigon and Darkseid, two of DC's biggest villains, which is a duel fans have wanted to see for ages.
- Special Effects Failure: The CGI used for the Paradooms against the Suicide Squad are quite... dodgy, to say the least.
- Spiritual Adaptation:
- Many people, on seeing screenshots alone, began asking when DC decided to make a Futures End movie. The comparisons are based on the heavy violence, After the End setting, heroes turned into cyborg zombies, and a time-travel-based ending that renders the whole story pointless.
- Along the same lines, the bleak tone, apocalyptic setting, and truly massive amount of character deaths have caused some fans to call the film DC's version of Ultimatum.
- The film appears to also borrow heavily from Earth 2,note about Apokolips invading and the remaining heroes fighting a losing war after the defeat of the DC Trinity, planet Earth eventually becoming "consumed" by Darkseid and Apokolips, and in the finale the heroes utilize a mystical rebooting of reality to resurrect "their" Earth.
- They Copied It, So It Sucks!: While still acknowledging how it takes two years to put these movies together, some reviews have accused the film of trying to follow on the coattails of Avengers: Infinity War and Avengers: Endgame, in that the surviving heroes sought to recoup from the loss of their friends and allies to an unstoppable villain and band together to stop said villain. Also, like with Endgame, the heroes (or at least one of them in this case) wants to try to fix everything via time travel.
- They Wasted a Perfectly Good Character: While the premise of the entire DC Universe uniting for an epic Crisis Crossover is an intriguing one, only a select handful of characters actually get significant screentime or even dialogue. Most of the returning characters (perhaps most egregiously the Teen Titans who aren't Raven and the Batman Family except Damian) are either Demoted to Extras or killed off without much fanfare.
- What an Idiot!:
- Superman's invasion plan (which can basically be summarized as "take the heavy hitters, show up at Darkseid's front door, and kick his ass") was poorly thought out. While the invasion largely failed because of the presence of the Paradooms, which the Justice League were unaware of, and Darkseid monitoring their briefing through Cyborg's eye, the fact that no one seriously objected to such a simple plan, with the only contingency being compelling an unwitting John Constantine to run away and eventually magic up a solution, is laughable. Even if it was doomed to fail, Superman should have at the very least sent spies and gather intelligence before making the attack. What makes it it worse, is that Lex Luthor actually suggests sending an envoy first rather than just taking everyone to Apokolips!
- The entire attack on the North Sea Reaper. Although previous films established that the Bat-family has access to powerful weaponry and vehicles far more advanced than those of the military, the trio joins the fight with nothing but their most basic weapons. Unsurprisingly, they are quickly slaughtered by the Paradooms, and are unable to inflict any damage to the machine.
- Darkseid has the mean to brainwash the heroes and turn even deceased ones into mind-controlled superpowered cyborgs.
You'd Expect: Darkseid would use this on all of the League and Titans he could get his hands on.
Instead: He leaves most of the heroes for dead, even those whose bodies could be safely retrieved.
- What Do You Mean, It's Not for Kids?: The movie earns its hard R rating with some truly gory deaths and even an f-bomb, almost like a horror movie, despite starring Superman, Batman and other heroes.
- The Woobie: He hides it well, but just imagine John Constantine living with the memory of how he left the love of his life to be torn apart by monsters while she screamed his name. He was magically compelled to flee, but didn't discover that until years later, so he's been forced to live with his actions all that time. It's bad enough that simply the mention of Zatanna's name is what makes Constantine rejoin the fight.
YMMV / Justice League Dark: Apokolips War