Christopher Markus and Stephen McFeelyChristopher Markus (born January 2, 1970) and Stephen McFeely (born November 12, 1969) are American screenwriters and producers. McFeely and Markus were the second and the third most successful screenwriters of all time in terms of U.S. box office receipts with a shared total gross of over $3.1 billion. However, in overall, they are the highest grossing screenwriters altogether in terms of worldwide box office with the total gross of $9.3 billion.
They gained worldwide recognition for their works that include ''The Chronicles of Narnia'' film franchise and the mega-shared universe franchise the Marvel Cinematic Universe, having written the three Captain America films (''The First Avenger'', ''The Winter Soldier'' and ''Civil War''), ''Thor: The Dark World'', ''Avengers: Infinity War'' and ''Avengers: Endgame'', which is currently the highest-grossing film of all time unadjusted for inflation. They also created ABC's ''Agent Carter'' TV series, set in the Marvel Cinematic Universe. Provided by Wikipedia