Smart Hulk was the unsung hero of Avengers: Endgame. If he hadn’t worn the Infinity Gauntlet for the first time and snapped his fingers, then all the heroes who came to help during the final fight against Thanos wouldn’t have been there.
But returning everyone soundly and safely came at a great physical cost for Banner. Wielding the gauntlet left his right arm severely burnt. As a result, it became unusable. And it made sense why. After all, the immense power of the 6 Infinity Stones used altogether was too much, and it disabled his arm. At the end of Avengers: Endgame, he is seen with his arm in a sling.
After that, he was seen during the mid-credits scene of Shang-Chi and the Legend of the Ten Rings. Back then, his arm was still in a sling. However, it seemed like it was healing. And as such, it looked a lot better than before. After this, many fans speculated that perhaps his arm wouldn’t ever heal. But that doesn’t seem to be the case in the newly released She-Hulk sizzle reel.
In the first look video of Marvel Studios Disney+ show She-Hulk, Mark Ruffalo’s Bruce Banner shows up as Smart Hulk. And he doesn’t have his cast. His right arm has seemingly fully healed as well. In the short clip, it does look like he has fully healed from the Infinity Stone snap. So obviously, there will be an explanation regarding his arm and how it healed so quickly to be functional again.
Fans of Marvel comics will know that Hulk has a very powerful regenerative healing factor. However, this hasn’t been explicitly shown in the MCU. Now, Bruce got a few good fights in Avengers: Endgame. But if Marvel Studios wants Hulk to be a capable leader, and make it feel like he is an OG Avenger, then they would have to fix his arm and that too soon.
After all, keeping Hulk disabled for long wouldn’t have been in keeping with his powers. Also, if those World War Hulk rumors turn out to be true, then he will need to have his strength for that. However, there’s also another possibility.
Maybe this scene in the She-Hulk sizzle reel took place during The Blip. This was the 5-year gap between Avengers: Infinity War and Avengers: Endgame.
So during this time, Bruce hadn’t hurt his arm. However, this is unlikely. The MCU is more likely moving in a post-Endgame timeline. After all, setting anything between Infinity War and Endgame might muddle the timeline even more.
Also, significantly important is the fact that fans now have confirmation that She-Hulk takes place post- Shang-Chi. This is because Bruce’s arm was still damaged at that point. So how did the arm heal so quickly? Guess we will have to wait for the show. Marvel Studios’ She-Hulk will premiere on Disney+ sometime in 2022.
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