Captain America has been one of the most popular superheroes for Marvel Comics fans for many years. However, for a large part of the fandom who doesn't read comics, Steve Rogers is known for his part in the Marvel Cinematic Universe. He showed up with his origin story in World War II and then quickly moved ahead to the present day where he helped form The Avengers.

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More people recognize Chris Evans's role as Captain America more than the comic book version, and it has caused some fans to mistake the movie version with the comic book canon. Whether it is from his time in the war to his role with the Avengers and his "best girl," there is a lot that the movies changed that doesn't line up with the comic book canon.

Peggy Carter Was With Captain America When He Changed

Steve and Peggy have a talk in the car in The First Avenger

In the Captain America movies, Peggy Carter was born in England and was a member of the British Royal Military, where she started working with the Allied Forces in World War II as a part of the MI5 operative. She was there when Steve Rogers became Captain America and they were connected from that point on.

In the comic canon, Peggy was not there when Steve became Captain America and she didn't even show up until after he was already fighting in World War II. She also wasn't born in England and was an American who ed the Daughters of Liberty before ing the French Resistance where she met Captain America.

Captain America Was Not Originally A Hero

First Avengers Cap Confrontation

In the MCU, Steve Rogers got the Super Soldier Serum and was turned into Captain America. Despite the changes this created, his superiors treated him like a joke. The United States government never planned for him to fight and used him to rally the troops in USO-style shows.

In the comics, this is not what happened. Steve Rogers became Captain America to become a warrior to fight Red Skull and the Nazis. He did go undercover at the start as an entertainer, but he was always sent to Europe to fight in the war.

Captain America Was Only Known For His World War II Mission

Steve Rogers marches with liberated soldiers in Captain America The First Avenger

Captain America was a joke to many of the U.S. military, but that did not stop him from saving a legion of American POWs and then taking the battle to Red Skull and bringing his reign of terror to an end. That was the extent of his operations in World War II.

That is not canon. Not only was Captain America created to become a warrior fighting the Nazis but he was a hero that did a lot more than just setting out on that one mission. He was a part of The Invaders with Namor and the Android Human Torch and had many adventures before he ended up frozen.

Bucky Barnes Was Saved By Hydra

Red Skull with Winter Soldier in front of Hydra sign.

In Captain America: The First Avenger, Captain America was working with his best friend Bucky Barnes and other Allied soldiers as they battled the Nazis and Hydra. At this time, Bucky was knocked from a speeding train and everyone assumed he had died. However, he was saved by Hydra and turned into a brainwashed assassin.

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That is not what happened in the comics. Bucky was with Captain America when he fought the Red Skull in their final battle. Bucky was knocked off a missile by Cap who crashed and was frozen. In the comics, it was the Russians that found Bucky and took him in, saving his life while turning him into an assassin.

Captain America Was An Avengers Founding Member

Captain America introduces The Scarlet Witch, Quicksilver, and Hawkeye in Marvel Comics.

In the MCU, S.H.I.E.L.D. found Captain America, frozen in ice, and brought him back and revived him. Nick Fury was working on building S.H.I.E.L.D. and with Captain America, he found the person to be the face of the team for the world. He was one of the founding Avengers.

Captain America was not a founding Avengers member in the comics. The original Avengers were Ant-Man, Wasp, Thor, Iron Man, and Hulk. When Namor accidentally unthawed Captain America, the Avengers showed up and had a small battle with him before they realized what was happening. Cap was the first new addition to the team.

Peggy Carter Was The Only Girl For Captain America

Steve Rogers and Peggy Carter dancing in Avengers Endgame.

In the movies, there was one strand that led from the start to the end of Captain America's story. In the start, he had Peggy Carter with him when he became a hero, and then the two had a date that never happened because he was frozen on ice. Peggy Carter was always Steve Rogers' girl and in the end, he chose to go back in time and grow old with her.

In the comics, Peggy fell for Steve when he was fighting in World War II with the Invaders and she was with the French Resistance. However, when Steve returned he had more than one relationship and was a lot closer to Sharon Carter in the comics than he was in the movies.

Winter Soldier Was A Hydra Operative

Winter Soldier sparring with Black Widow in Red Room.

While it wasn't Hydra who saved Bucky Barnes in the comics, they also didn't train him either. In the movies, Hydra used him as a weapon for years and he was the key to Hyrda trying to take over the U.S. government. That is not his role in the comics.

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Instead, when Russia saved him after he fell, he went to the Red Room and was both trained there and was a trainer for the girls used as weapons. He even worked with a young Black Widow in the Red Room. Winter Soldier showed up later and tried to kill Captain America, and he was under the control of a former Russian KGB agent named Aleksander Lukin.

Winter Soldier Killed Tony Stark's Parents

Iron Man Howard Maria Stark Winter Soldier Newspaper

Captain America: Civil War saw Iron Man and Captain America battle for two very important reasons. One was that they disagreed about the Sokovian Accords, which required anyone with superpowers to with the government and work for them. The second reason was that Winter Soldier killed Howard and Maria Stark.

This is not Marvel Comics canon. In the comics, Howard and Martha died in a mysterious auto accident, just like they did in the movies. However, Winter Soldier was never implicated in that murder, with Roxxon and Hydra as two possibilities.

Falcon Served In The Military

Heroes Reborn - Falcon and Captain America

Captain America met one of the most important people in his life in Captain America: The Winter Soldier. This was Sam Wilson, and he was a military man who was working to lead groups for veterans. Thanks to his military service, he was a clear option for Cap to leave his shield when he retired.

However, Sam becoming Captain America in the comics was a much harder road. That is because he didn't have the background. Sam Wilson was never in the military in the comics. He was a street thug who chose to go good and ended up gaining his wings after a run-in with Red Skull. When he took over Cap's role, a lot of people in America didn't approve.

The Civil War Only Included The Avengers

Captain America and his team running toward battle in Civil War

In Captain America: Civil War, the superhuman registration act was put into motion because of the deaths that took place in Sokovia. This led to the Avengers splitting down the middle and going to war against each other. Iron Man was there to bring in and arrest Captain America and his allies.

However, this battle between a dozen heroes was much bigger in the comics. It involved every single superhero in America. Iron Man even worked with Reed Richards to develop a prison in the Negative Zone and cloned Thor, who murdered the hero Goliath. Things in the comics got way out of control.

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