Joss Whedon, Writer The Avengers. Joss Whedon is the middle of five brothers his younger brothers are Jed Whedon and Zack Whedon. Both his father, Tom Whedon .Joseph Hill Whedon hw i d n born is an American screenwriter, director, producer, comic book writer, and composer. He is .Screenwriter, director and producer Joss Whedon is best known as the creator of Buffy the Vampire Slayer . Learn more at Biography.com..Joss Whedon Celebrity Profile Check out the latest Joss Whedon photo gallery, biography, pics, pictures, interviews, news, forums and blogs at Rotten Tomatoes!.The latest Tweets from Joss Whedon @joss . indifferent honest. United States.