This 'Captain America' character will be in 'Avengers 4'

We know very little about Avengers 4 – other than that most of our faves are dead – but now we have a teeny, tiny nugget of intrigue.
Actor Frank Grillo, who played Brock Rumlow/Crossbones in Captain America: Winter Soldier and Captain America: Civil War, revealed that he returned to the MCU for an Avengers 4 flashback.
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“[Crossbones] makes an appearance in the next Avengers movie, but it&rsqu