The Marvel Cinematic Universe has done a great job so far of keeping things running with a giant shared universe. With several different franchises and characters, this can't be an easy task for the studio. However, starting with Iron Man and leading through Avengers: Endgame, the studio created a giant overarching story that flowed almost seamlessly from one movie to the next.

Along the way, things did get a little shaky at times, but the MCU usually corrected its course and didn't miss a beat. However, fans can be tough and when subtle continuity errors crept up, the fans were quick to point them out. These include both errors between movies, and even those mistakes that popped up in a movie.

10/10 Captain America's Shield In Endgame

Captain America holding his shield in Endgame.

Avengers: Endgame rushed along at a nice pace, from the time traveling to the major final battle with Thanos. This quick speed allowed some subtle continuity errors to slip through, but nothing that was enough to hurt the enjoyment of the film. One of the errors involved Captain America's shield. In the movie, Thanos breaks Cap's shield to show his power. He then returned later with his shield intact. One theory is that he got it from a different timeline, but that is up to the viewers to determine.

9/10 Spider-Man: Homecoming - 8 Years Later

Spider-Man with his mask off standing beside a train in Spider-Man: Homecoming

The biggest continuity error when it comes to tying all the movies together came in Spider-Man: Homecoming. While this was a major error that fans caught and talked about online, it only came with one time reference in the movie and most fans likely never even saw it. The movie said this was "8 years later" from the battle of New York. This is wrong. Avengers: Infinity War co-director Joe Russo admitted in an interview that this was "a very incorrect eight years."

8/10 Arnim Zola Takes Bucky Captive

Winter Soldier on a table undergoing his programming.

In Captain America: The Winter Soldier, what happened to Bucky Barnes after Captain America: The First Avenger was revealed. The Soviet Armed Forces saved Bucky and took him to Arnim Zola. The mad scientist then turned him into the HYDRA assassin known as The Winter Soldier. This is not possible, though. Captain America took Arnim Zola into custody the same day Bucky fell from the train, which Zola even admits to inThe Winter Soldier.

7/10 Gamora: Last Surviving Zehoberei

Thanks walking off with Gamora.

InGuardians of the Galaxy Vol. 1, the future members of the team ended up arrested by the Nova Corps and taken to a space prison. While they were booked into the prison, each of them stood before a wall for mugshots and their bios were shown.

Gamora has said she was the "last survivor of the Zehnberei people." This is a problem because in Avengers: Infinity War, Thanos invaded Zehnberei and only killed half of the people on the planet, taking Gamora with him. He only killed half the citizens, which means if everyone else died, that planet had some seriously bad luck.

6/10 Captain America's Shield In Iron Man 2

Captain America's shield on a table behind Iron Man.

InIron Man 2, there was a shot that fans loved to see. It showed Iron Man testing out his armor in his lab. On the workbench behind him was Captain America's shield. This was a fun moment, and showed fans that Cap lived in this world and might be coming soon. However, there is a huge continuity problem with this. Captain America was frozen in ice with his shield. There is no way Iron Man could have the shield in this case.

5/10 Howard Stark's Age

Howard Stark looking at an invention.

The MCU did a good job of showing how Howard Stark aged in the movies. They used two different actors, with Dominic Cooper as young Howard and John Slattery as older Howard. However, how old is Howard Stark, because his timeline makes no sense. Tony was born in 1971. Dominic Cooper was Howard Stark in the 1940s during World War II. This would put Howard in his mid-50s when Tony was born and his 60s or 70s when he showed up in Ant-Man's flashback scene. This could be true, but it never feels right.

4/10 Ant-Man In Endgame

Ant-Man as part of the attack in Endgame.

There was lots of time travel in Avengers: Endgame, so it is easy to explain away a lot of continuity errors by just claiming that fact. However, there was one moment in the big fight with Thanos that was impossible and was clearly an error created in editing.

Ant-Man was inside the van during the fight, trying to hotwire it to help get the time travel device in it closer to the fight. At the same time he was hotwiring the van with Wasp, Ant-Man appeared in giant form during the fight, appearing right behind Black Panther.

3/10 Doctor Strange: Most Wanted

Doctor Strange in the middle of a battle.

There was a moment inCaptain America: The Winter Soldier where Hydra was pushing its Project Insight through, which was a way to eliminate superheroes that might cause them problems. This included a watchlist of "threats" to the organization. He namedropped some people, which included names like Steve Rogers, Bruce Banner, and Stephen Strange. The problem is that Strange was still a surgeon at the time and had not become Doctor Strange yet, so there is no reason for his name to be on that list.

2/10 Captain America's Suit In Avengers

Captain America fighting himself in Avengers: Endgame

Captain America went back in time to help retrieve the Infinity Stones, and things were not easy when they went to the Battle of New York aftermath. While they were trying to get the stones there, including the Ancient One's stone and the one that Loki had, Captain America ended up battling himself. This was after the Battle of New York just ended and he fought his past self, whose costume was immaculate. This makes no sense because his costume was destroyed in that battle, shredded from the fight with aliens.

1/10 Loki's Ability To Control People

Loki controlling people with his staff.

Loki showed up as the main villain inThe Avengers. He ended up getting the Infinity Stone and put it in his scepter. He then used this as a device to control people, as he did with Hawkeye in the first battle. However, this really doesn't make any sense because of an early scene in a previous movie. In the post-credit scene inThor, Erik Selvig was with Nick Fury and looking at the Infinity Stone. It showed there that Loki was already controlling him, even without the stone, so there is no explanation why he had to have it in Avengers to control people.

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