Avengers actors Don Cheadle and Robert Downey Jr. have paid tribute to Chadwick Boseman at the MTV Movie & TV Awards.The actors, who starred alongside Boseman in three Marvel films including Avengers: Endgame, announced the Black Panther star as this year’s Hero for the Ages at the ceremony.“The second you first saw him on screen or had the opportunity to meet him in person, his energy and intensity was undeniable.