Marvel Character Cameos in Avengers: Endgame
The Best of Avengers: Endgame's Surprisingly Nostalgic Cameos
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Last seen in Civil War, Rumlow is another S.H.I.E.L.D employee who is revealed to be an agent of HYDRA. Steve uses his current knowledge of HYDRA to nab the Chitauri scepter containing the Mind Stone from him and the other double agents.