Unpopular opinion: the movie with the best characterization of a mature Thor is Avengers: Age of Ultron.
The opinions on quality of Thor’s maturity and growth across films will always be subjective, I believe, but Thor in Age of Ultron is underrated in this regard. I think it’s the first movie where we see Thor not necessarily in the process of becoming more mature, but being mature. It’s the first film where Thor isn’t just actively trying to overcome the mistakes of his youth, trying to find his own way in the universe, and/or fighting with sentimental emotions to do what’s right.
I don’t think this opinion is unpopular simply because many people think that it is completely not true, but rather because this film is unpopular. It’s easy not to pay attention to Thor’s characterization when it’s not a fan favorite for a lot of people. From what I can remember, parts of the fandom were fizzling out and the excitement of the first Avengers film was wearing off. However, what I also remember was the overwhelmingly positive reaction to Thor despite it all.
I believe that was in part because Thor was the mature one. Thor was the wise one. Thor was the patient one. Thor was willing to face many unknowns in order to make the right decisions. Thor embodied qualities that people wished were present amongst all the other heroes. Of course, this was all made possible by Thor’s growth over the previous films. Thor was relatively sheltered from consequence for a long time as a prince, but was forced to mature.
Thor was more somber in Age of Ultron, due to the loss of his mother and his brother. While this could have made him self-destruct and I would not blame him for it, he chose to turn his mourning into something productive. He was shaken by the visions he was given, and chose to go out to find answers despite how frightening those answers may be. Furthermore, while his anger often gets the best of him, he only lost control on Tony Stark.
Why? …because he actually understood the gravity of Stark’s choices. Thor wasn’t having a tantrum. He wasn’t aggravated because he was prevented from doing something he wanted or needed to do. He wasn’t being impatient. He was angry because no one seems to be taking the situation as seriously as they should and if they are they’re wallowing in despair, while Thor has been working tirelessly to find solutions to a situation that could have been prevented.
Thor was the mature one in that film, because he had to be. To me, that doesn’t mean that Thor needs to maintain a serious outlook and attitude across the films moving forward. Thor continues to make difficult decisions despite the amount of pain and loss it brings him, and he’s been able to do so with a serious attitude and with a sunny optimistic disposition as well. Age of Ultron Thor embodies maturity in a lot of ways, though, in a manner that stands out.
It’s just unfortunate that the movie does not equally stand out.
Unpopular opinion #2: AOU is underrated, largely because people have the knee-jerk impulse to demonstrate their moral purity by hating on Joss Whedon for everything he does – not just his characterization of women, which does have some issues, but also his storytelling and characterization abilities more broadly. Plot-wise, AOU is no messier than Civil War; in terms of character arcs and philosophical depth, it’s in a different league entirely.
Unpopular opinion #3: Ragnarok does not show a mature Thor but “with a sunny optimistic disposition” instead of a serious one; it does not depict Thor at all. Infinity War attempts to get back to mature Thor, but is hampered by the need for some kind of continuity with Ragnarok (which showed no such consideration for its predecessors) and the fact that character was taking a backseat to a contrived plot throughout IW.
Unpopular opinion #1b: Thor in AOU is exactly what “funny Thor” should look like. His sense of humor is subtle and deadpan; he occasionally veers into the undignified, but never comes off as a buffoon.
Loki is the Philosopher King 