For Halloween 2021, Jeremy Renner suits up as Hawkeye. The actor joined the Marvel Cinematic Universe all the way back in 2011's Thor, but he wasn't properly introduced until 2012's The Avengers. Now, a decade since his first appearance, Renner becomes his superhero persona in real life for this year's Halloween.
As part of the MCU's original Avengers, Clint Barton is one of the three remaining founding Marvel characters who has survived the events of the Infinity Saga. Iron Man (Robert Downey
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