Can any MCU character defeat Thanos without Infinity Stones?
Quick Answer
In the MCU, no character has demonstrated the ability to defeat Thanos without Infinity Stones in a direct confrontation, as his combat prowess, durability, and tactical skill surpass most heroes even when stripped of his cosmic artifacts.
Explanation
Thanos without Infinity Stones remains a formidable opponent in the MCU, possessing superhuman strength, speed, durability, and tactical genius honed through centuries of warfare. In 'Infinity War' and 'Endgame', heroes like Iron Man, Captain America, and Thor struggled against him even when he was not fully empowered by the Stones. Thor, when wielding Stormbreaker and overcoming his initial underestimation of Thanos, came closest to defeating him, but this was achieved through a combination of Thor's enhanced power, the weapon's unique properties, and coordinated teamwork rather than a single hero overpowering Thanos solo. No MCU character has canonically defeated Thanos in a one-on-one battle without external assistance or enhancements. The narrative consistently positions the Avengers' collective effort, strategic planning, and temporary acquisition of the Stones as necessary to overcome him, underscoring his role as a near-unstoppable villain even when depowered.