The threequel will see Thor stripped of his hammer and signature golden locks. And it turns out that Thor's haircut while in captivity was actually helpful for actor Chris Hemsworth; it allowed him to explore more physically with his most iconic role.
Chris Hemsworth recently spoke to EW (via Screen Rant) about his third solo films, where he addressed how the wig was in some ways weighing down his physicality in his previous entries in the MCU. He said,
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When I didn't have the wig on, I instantly felt like I could move and speak and react differently. Once we aesthetically stripped a lot of that away, it allowed the whole thing to take on a different attitude. It felt like a completely different character, and that was hugely liberating and freeing as an actor because I had become a bit bored with myself.