For all the unprecedented success that the MCU has enjoyed, some of the shared universe's most interesting events have occurred off screen. Not that the Marvel Cinematic Universe has suffered for it in the slightest, of course. Since kicking off with the breakout sensation that was the 2008 film Iron Man, the MCU has revolutionized the entertainment industry, movies and TV alike. It's not exactly the first shared universe to come around (it's most notably proceeded by the original Universal Monsters movie series), but it might as well be. The sheer magnitude of the MCU's success is unlike anything the industry has ever seen.The shared world of Marvel just released its 18th big screen entry, Black Panther, which is quickly becoming one of its most accomplished films to date. Having already grossed over $700 million in under two weeks, Black Panther has pushed the MCU's total cinematic haul over the $14 billion mark. The financial success of Marvel's films is matched only by their critical reception, as the 18 movies combine for an average 84% fresh rating over on Rotten Tomatoes. Honestly, we're not even going to attempt to list the accomplishments of the MCU's 10 television shows, because we really need to wrap up this intro and get to the good stuff.Related: The Shared Universe Craze May Already Be DyingConsidering all the wild adventures the MCU has taken us on over the last decade, it's pretty crazy to think about all the stories that didn't end up making it to the screen. It takes a ton of world-building in order to construct a shared universe, and even Marvel has its limits as far as production capabilities, so understandably, some pretty interesting tales have gone untold. (Or unrealized in live-action, anyway.) Here are the Best MCU Moments Not Shown In The Movies.(Note: all dates are based on the Marvel Cinematic Universe timeline or our best estimates. All inaccuracies are the result of the shared universe's increasingly inconsistent chronology. Probably.)

974 A.D. - Snake Loki stabs Thor

We learned of this random little incident in Thor: Ragnarok thanks to a brief storytime lesson from the titular god of thunder. When he and his brother Loki were kids, the latter used his sorcery skills to turn himself into a snake, a favorite of our hero. Once Thor picks him up, Loki turns back into his usual form and stabs his big brother, a move that's only funny to Loki (and the audience, of course).

Obviously, this wasn't a particularly groundbreaking or impactful event. We just think it'd be funny to see it play out onscreen.

Spring 2007? December 2009? Your guess is as good as ours - Black Panther and Okoye's first team-up

Black Panther and Okoye in Black Panther prelude comic

You'd be forgiven for having skipped the MCU prequel comics thus far (or for not knowing they exist at all), because by and large, they aren't exactly can't-miss material. The prelude comic for Black Panther is a rare exception, as it depicts a few of the hero's earliest adventures as well as his first team-up with Okoye, the head of the Dora Milaje and T'Challa's future right hand gal.

The comic's exact place in the timeline is hazy. It supposedly takes place at the same time as Tony Stark's infamous "I am Iron Man" moment (evidence suggests that this transpires in November 2009) but also 10 years before the events of Black Panther (which is set in the summer of 2016...we think). Chronological inconsistencies aside, the important part is that the comic picks up one week after T'Challa has taken up the Black Panther mantle, so he's new to the gig. He and Okoye join forces to rescue a group of Wakandans being held captive in Paraguay, and a good time is had by all. Except for the kidnappers -- one dies, and the other gets his hands lopped off.

January 1998 - Hawkeye recruits Black Widow

Black Widow's past in the MCU has been largely left unexplained, save for a handful of references to her days working for the KGB and a flashback or two. There's a chance that those dark days will be explored more fully in her (long overdue) solo film, and one event we're hoping to see onscreen is her big showdown with Hawkeye while she's working as a Soviet agent.

After Natasha Romanoff had murdered her way up SHIELD's most wanted list, Nick Fury sent Clint Barton to take her out. Hawkeye made a different call, and he and Fury ended up recruiting her instead. This confrontation, along with Black Widow and Hawkeye's subsequent field work for SHIELD, would be a welcome site on the big screen.

April 1987 - The original Ant-Man in action

The MCU's decision to make Scott Lang the modern Ant-Man, relegating Hank Pym to an aging mentor role, was a controversial one. Moviegoers caught a glimpse of Pym's superheroing days through flashbacks, but until Ant-Man and the Wasp (or its prequel comic, which will debut later this year) reveal a bit more, we'll have to settle for the pair of prelude comics that were released shortly before Ant-Man hit theaters in 2015.

Similar to the Black Panther tale we mentioned earlier, this two-part prelude sees a young Hank Pym in his first field mission. Radicals have been working to reverse-engineer old HYDRA tech, and SHIELD needs to shut them down as quietly as possible. Since he refuses to let anyone else use the Pym Particles, Hank ends up doing the job himself, though he's not quite as subtle about it as he was supposed to be. He seems to acquire a taste for heroism during his successful mission, and on its final page, the prequel comic teases that there will be more to come.

We imagine his follow-up adventures in the field will be explored in some capacity when Ant-Man and the Wasp hits theaters, as should the film's upcoming prelude comic.

2012-ish - That time the Abomination almost was recruited for the Avengers

Marvel's direct-to-video One-Shots, which the studio stopped producing back in 2014, will ultimately be remembered for two things: for inspiring a pair of MCU TV series (Agents of SHIELD and Agent Carter) and establishing that the real Mandarin does indeed exist in the MCU...somewhere.

The first of those One-Shots, The Consultant, isn't nearly as well known as its brethren. The short centered around a pair of conversations between Agent Coulson and Agent Sitwell, who hatch a plot to prevent the World Security Council from making the Abomination an Avenger. Yep, that was apparently on the table. No one in SHIELD wants the Abomination on the Avengers, of course, so Coulson and Sitwell have to sabotage a meeting with then-General Ross, who has the man formerly known as Emil Blonsky in his custody.

They end up finding their man in Tony Stark, who meets with Ross (their conversation was teased in a credits scene from The Incredible Hulk) and manages to piss him off so much that the General refuses to release Blonsky. We just wish that we could have witnessed their confrontation firsthand.

1014 A.D. - War between Kree and Nova Empire begins

When audiences are introduced to these empires in Guardians of the Galaxy, we learn that they've been at war with one another for an insanely long time. Roughly a millennium, in fact. Well-known characters like Mar-Vell and Nova himself have yet to make their big screen debut in the MCU, however, making us wonder if their place in the shared universe's timeline is a bit more ancient than we might have thought.

Jude Law is set to play Mar-Vell in the upcoming Captain Marvel movie, so we may be in store for some background info on this long-running conflict in the very near future. It would definitely be interesting to learn a bit more about how a 1,000-year-long war gets ignited.

2016 to present - Secret Avengers fight terrorists

As we mentioned in the Black Panther and Ant-Man entries, most of the Marvel prequel comics don't have all that much substance. Part 1 of the Infinity War prelude comic, however, contains a bunch of interesting tidbits, most notably that Captain America has formed his own Secret Avengers team. Working alongside Falcon and Black Widow, the trio is seen in Syria thwarting a terrorist plot.

Again, seeing what these three have gotten up to since the events of Civil War isn't exactly essential information, and we may even catch a glimpse of the team in action once Infinity War rolls around based on footage that leaked back in November. But let's be honest here: if this were made into a Netflix series, you would watch the living hell out of it.

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