Ant Man defeats Thanos meme. Lot of Ant Man vs Thanos memes lately, and I've been willing to make one as well. Ant-Man Will Defeat Thanos by Crawling Up His Butt and Expanding refers to a fan theory speculating that in the 2019 Marvel superhero film Avengers: Endgame the character Ant-Man will defeat Thanos by entering the villain's body through the anus while in his microscopic form and rapidly expand from the inside, killing Thanos in the process.