A new MCU fan theory suggests that Mjolnir may become even stronger in Thor 5, giving Chris Hemsworth's God of Thunder a huge power upgrade in his next Marvel Studios adventure. Mjolnir has been a huge part of Thor's MCU journey since his debut in 2011's eponymous Thor. Initially, Thor was the only MCU character worthy enough to wield Mjolnir, but several other heroes have swung the hammer in the years since, including Vision in Avengers: Age of Ultron, Steve Rogers' Captain America in Avengers: Endgame, and Jane Foster's Mighty Thor in Thor: Love and Thunder, but a new theory suggests Thor may retrieve his beloved weapon in Thor 5.
