Steve Rogers, aka Captain America, was one of the first superheroes who helped kickstart the MCU. He debuted in 2011 in his solo film Captain America: The First Avenger, which, unlike the rest of his films, mostly took place in the 1940s. Steve later became an important member of the Avengers but now, the title of Captain America will belong to Sam Wilson.
Steve had been through a lot of things, he lived both in the past and in modern times. He fought enemies from space, witnessed the Avengers falling apart, and then spent five years trying to figure out the way how to reverse the Snap. As a result, Steve Rogers from First Avenger wasn't the same Steve Rogers who appeared in Avengers: Endgame (2019).
10 He Adapted To The Modern World
Steve Rogers was born in 1918 and he grew up in times very different from the 21st century. So when he woke up after his unwilling long sleep, he found himself in a different world.
At first, Steve struggled with adapting to modern society and all its inventions and customs. However, as time went by, Steve seemed to have adapted to the changes. At least he seemed fairly comfortable with using inventions such as mobile phones and the internet which weren't available during his time.
9 He Got Accustomed To Aliens
Another different aspect of the modern world Steve had to face after his arrival in the 21st century was the existence of aliens - and gods. Steve always was open-minded so he seemed comfortable with dealing with Thor who was an actual Norse God.
Not everybody would be so welcoming toward beings very different from them but Steve and Thor were friendly, if not friends. And when Steve later met Groot before battling Thanos, he greeted him and didn't act like meeting a talking tree was something to cause a ruckus about.
8 He Worked On His Fighting Skills
The serum flowing through his veins gave him enough strength to defeat his enemies - but combat-wise, Steve lacked the necessary knowledge. However, the decade he spent in the 21st century also gave him the opportunity to work on his fighting skills, to improve as a fighter.
He trained regularly and worked on maintaining his physique - something he probably didn't have as much time to do when he was busy fighting Nazis and performing during World War Two.
7 He Became Less Awkward Around Women
Before he got injected with the serum and became Captain America, Steve was very awkward around women. They mostly overlooked him anyway because of his small stature and shy behavior. Peggy Carter was the first woman who saw Steve for who he really was.
When he joined the Avengers, Steve eventually relaxed and became more comfortable around women. He still treated them with respect and was never as suave as Tony, but at least he no longer stuttered and blushed every time a pretty woman addressed him.
6 He Became Skeptical Of The Government
When Steve Rogers started his journey as Captain America, he believed in the American government and everything he represented. But when the Accords came to be, Steve grew skeptical of the elected representatives and their goals.
He no longer was the loyal soldier and defied the government by freeing his fellow Avengers who saw matters the same way. Together, they went on the run.
5 He Found New Friends
In the 1940s, after the death of his parents, Steve had only one real friend - Bucky Barnes. That changed when he came to the 21st century. Steve became friends with several other superheroes, most notably Natasha Romanoff, Wanda Maximoff, and Sam Wilson, with whom he shared the experience of being a soldier.
And there was also his love-hate relationship with Tony Stark - despite their disagreements, they were friends too.
4 He Became Worthy Of Lifting Mjolnir
Steve Rogers could rule all of Asgard. At least according to Thor's words from Avengers: Age of Ultron (2015). During their party, Thor said that whoever lifts his hammer, can rule Asgard.
And a few years later, Steve Rogers became worthy of lifting Mjolnir. He used the hammer against Thanos and saved Thor's life in the process. Not bad for a kid from Brooklyn.
3 He Stopped Using Firearms
With all that's happened in between, it's easy to forget that Steve used to fight with firearms as well. During World War Two, he and the Howling Commandos used firearms against their enemies.
Later on, though, Steve switched to using his shield and his fists - possibly because he didn't like guns, or maybe he felt that the shield represented what Captain America stood for better than any firearm.
2 He Gave Up On Love
Once upon a time, Steve dreamed about having his dance with Peggy after the war was over. But when he ended up in the future, he decided to give up on his dream to have a family. He said that to Tony when they were saying goodbyes in Avengers: Age of Ultron.
Steve dedicated himself to being Captain America, being a superhero, and he put his personal life on hold.
1 But Later Went To Peggy
In the end, though, Steve changed his mind and decided he could have a shot at personal happiness as well. After all, was said and done, Steve decided to follow Tony's advice and try the family life and love he denied himself for years.
He went back in time to spend the rest of his life with Peggy and handed the shield - and the mantle of Captain America with it - to his good friend Sam Wilson.