Plenty of filmmakers have influenced the look, feel, and energy of contemporary action movies, with the Wachowski sisterschanging the game with The Matrix in 1999 and Chad Stahelski elevating the genre more recently with his John Wick franchise. However, arguably, no director has had as much mainstream influence as James Gunn, the former Marvel mastermind who steered the franchise in a new direction with Guardians of the Galaxy, before departing forDC.