It fell to Tony Stark/Iron Man (Robert Downey Jr) to defeat Thanos once and for all by crafting his own Infinity Gauntlet and sacrificing himself to save the universe.
Elsewhere, Express.co.uk’s poll found a number of the most critically well-received Marvel films close behind Endgame.
The first Iron Man, which kicked off Phase One back in 2008, got 12 per cent, while Captain America: The Winter Solider got 10 per cent.
Close behind were Avengers: Infinity War, Guardians of the Galaxy and Thor: Ragnarok, which each received nine per cent of the votes.