In the Marvel Cinematic Universe (MCU), there isn’t a single Avenger who can definitively beat everyone. The Avengers team is comprised of various superheroes, each with their unique abilities and strengths. While some characters may be incredibly powerful, it is important to consider that the outcome of any battle would depend on factors such as the specific circumstances, the abilities and strategies of the opposing forces, and the plot of the story being told.
Characters like Thor, Captain Marvel, and the Hulk are among the most powerful members of the Avengers and have displayed immense strength and abilities. However, even they have their limitations and vulnerabilities. The MCU often emphasizes teamwork and the collective strength of the Avengers, highlighting the importance of collaboration and utilizing each member’s unique skills to overcome challenges.
It’s worth noting that in the comics, power levels and outcomes of battles may vary from their on-screen depictions in the MCU. Additionally, new characters and storylines continue to be introduced, adding to the complexity of determining a single Avenger who can defeat everyone.