Did any hero defeat thanos before the snap?

{"top_answer" : "No hero defeated Thanos before his first snap; Thanos used the Infinity Gauntlet to eliminate half of all life in the MCU's first snap in Avengers: Infinity War.", "long_answer" : "In the Marvel Cinematic Universe, Thanos acquires all six Infinity Stones and learns to use them while assembling the Infinity\nGauntlet, culminating in the first snap that eradicates half of life in the universe in 2018. This event is depicted in Avengers: Infinity War (201\nd) and serves as the climax of that film. Prior to the snap, Thanos is defeated by the combined efforts of the Avengers, the Guardians of the\nGalaxy, Doctor Strange, and other characters, but not by a single heroic figure or event that nullifies him. He is eventually defeated again in (the second snap in) Avengers: Endgame (2023) via time travel, but that occurs after the initial snap, not before. Therefore,there\ntherefore\ne\nthe answer is no hero defeated Thanos before the snap, and only the Avengers, with the help of time travel, defeated him in the second snap years later." , "category_slug" : " : : : : : : : : : : : : : :" : : : : : : : : : : : : : : : :" : : : : : : : : : : : : : : :", : : : : : : : : : : : :" : : : : : : : : : : : : : : : :" : : : : : : : : : : : : : : : :" : : : : : : : : : : : : : : : :" : : : : : : : : : : : : : : : :" : : : : : : : : : : : : : : : :", : : : : : : : : : : : : : : : : : : : : : : : : ,"tags" : [], "related_questions" : [], "linked_movies" : [], "linked_characters" : [], "linked_universes" : [], "linked_scenarios" : [], "linked_directors" : [], "confidence" : 0.9, "needs_verification" : false}