Wong

Wong is a major character of the Marvel Cinematic Universe. Specifically, he is the tritagonist of Doctor Strange, a major character of Avengers: Infinity War, and Avengers: Endgame. He is set to return in the upcoming films, Shang-Chi and the Legend of the Ten Rings and Doctor Strange in the Multiverse of Madness.
He is a member of the Masters of the Mystic Arts, a group of sorcerers led by the Ancient One to protect the world from mystical threats. He helped Doctor Strange battle against Kaecilius and the Zealots stop Dormmamu's return, and became one of the protectors of the New York Sanctum. 
When Thanos decided to collect the Infinity Stones to erase half of the universe, Wong protected New York after Doctor Strange was kidnapped by Ebony Maw. He was one of many who were erased by Thanos, but was resurrected by Hulk in 2023 and helped defeat Thanos and his army during the Battle of Earth. He later attended Iron Man's funeral alongside Strange to honor his sacrifice in stopping the Mad Titan and his army.
He is portrayed by Benedict Wong.