The Avengers are a diverse group of heroes, boasting dramatically different personality traits. The MCU has utilised this well, presenting various conflicts between the group. If the Avengers attended Hogwarts, then, the Sorting Hat would have immediately picked up on the fundamental differences between them. Some of the Avengers have a very obvious house, while others have strong secondary house characteristics too. Let's take a look.
Bruce Banner might turn into a large, strong Hulk, but he himself is a rather soft, intellectual man. Banner is an extremely talented scientist and all about the pursuit of knowledge, making him a Ravenclaw.
He also has some Hufflepuff characteristics, however, being a kind, gentle soul deep down. Overall, though, since so much about Banner’s character is about his intellect, Ravenclaw is definitely the house he would be sorted into. It's certainly where he would thrive.
Slytherin gets a bad rap, but having Slytherin traits is not a bad thing. Natasha Romanoff is a talented spy, so she has many Slytherin characteristics such as being cunning, clever, and self-preserving. She also is loyal to the people she cares about and cares about the people in her circle, which are also Slytherin traits.
While her secondary house is likely Ravenclaw, she would make a great addition to Slytherin and has most of the main Slytherin traits.
T’Challa is a character that is a bit hard to place, because he’s very balanced as a person. He has a sweet, soft, dorky side that makes sense for Hufflepuff, but is also powerful, clever and cunning, making him a little Slytherin-like. Overall, however, it seems that T’Challa is a true Gryffindor.
He is extremely brave, for one thing. He is also daring and full of courage, all about taking care of his people and trying to do the right thing. T’Challa definitely embodies all of the best traits of Gryffindor house. Heck, if he’d attended Hogwarts, he'd probably have been Head Boy to boot.
Spider-Man is another character who has two main options for his primary house. He is obviously very smart and inventive, which are Ravenclaw traits. However, he seems to be a better fit for Hufflepuff. Members of this house are defined by their hard-working, dedicated and fair natures. They also often have a soft side to them, something else that Spider-Man has in spades.
Peter Parker in the MCU is a big sweetheart, and he also works hard to be a hero, never letting anything get in the way of his doing the right thing. His big heart and desire to save others makes him a Hufflepuff for sure.
Hawkeye is another character that belongs in Hufflepuff, which shows that people from the same house can still be very different personality-wise.
Hufflepuff is an inclusive house, perfect for those individuals who don’t have strong characteristics of the other houses. While Hawkeye is brave and intelligent, he doesn’t really fit well as a Gryffindor or a Ravenclaw. His hard-working tendencies (particularly in light of the fact that he has to be extra skilled as a normal human to keep up with superheroes) place him firmly in Hufflepuff. He’s also a character that seems to take a balanced, fair approach to life.
Vision is a character that is mostly about intellect. Seeing as he was partially made from the Jarvis AI, Vision’s foundation as a being is all about knowledge and wisdom. Plus, he was literally brought to life with the Mind Stone, so everything about him is centered around the mind and learning.
It’s hard to image Vision fitting into any other house. His character in the MCU is mostly about intelligence, like Bruce Banner. As a result, he would also excel in the company of his fellow intellectuals.
Thor is one of the most Gryffindor-like Avengers of all. He exemplifies basically every trait that Gryffindors are known for. He is extremely brave and daring (sometimes he can actually be daring to the point of being quite reckless). These are all defining personality components among Gryffindors.
He is also very courageous and chivalrous, always committed to saving the day (even if he has to break some eggs to do so). Thor would be the life of the party in the Gryffindor common room for sure and he would likely get up to a lot of fun and pranks there, too.
Captain America is a more difficult person to sort than it might seem on face value. While he seems like a complete Gryffindor, there are two personas to Steve Rogers. He has the Captain America role, which represents Gryffindor traits such as bravery, chivalry, and courage. He is also committed to saving people, and he can also be a bit reckless in the process.
On the other hand, Steve Rogers himself is a bit more introverted. His relationship with Iron Man shows some of his less-than-honest side. Steve is a good person, but he isn’t always as up front about things as one might think.
Tony Stark might seem like a huge Slytherin, but he’s really more a mix of the two. He’s definitely ambitious, achievement-oriented, and a bit of a narcissist. He also makes a good leader, all of which are Slytherin traits.
On the other hand, though, he’s also all about wit and knowledge. He’s someone who is very proud of his achievements and wants to be known for being an inventor and creator. There is a lot about Tony --and his passions-- that's very Ravenclaw-like.
Captain Marvel is also a Gryffindor. There are quite a few of them on the team, which makes sense, as you need a lot of bravery and leadership skills to be a good superhero. In Captain Marvel, Carol Danvers definitely has a bit of a reckless and proud streak, too, which are prime Gryffindor traits.
She is extremely courageous, always fighting to do what she thinks is right and battling to save innocent people. Captain Marvel exemplifies nerve, and she fits right in as a Gryffindor.