CNN
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For Marvel Studios, all roads have led to “Avengers: Endgame.” More than a decade and 21 films in the making, the fourth Avengers film finally arrives in theaters this month with almost impossibly high expectations – both for audiences and the box office.

In the build up we’ve accumulated dozens of characters in the ever-sprawling Marvel Cinematic Universe. However, after the events of “Avengers: Infinity War” – which saw the Mad Titan Thanos wipe out half of all sentient life with the snap of his fingers – their numbers are heavily depleted.
For the sake of