Joseph Hill Whedon He is the founder of Mutant Enemy Productions and co-founder of Bellwether Pictures, and is best known as the creator of several television series, including Buffy the Vampire Slayer (1997–2003), He wrote and directed the Marvel Cinematic Universe superhero films The Avengers (2012) and its sequel Avengers: Age of Ultron (2015), and also co-wrote the script for the DC Extended Universe superhero film Justice League (2017), for which he also served as director on reshoots. Joseph Whedon Born in New York City on June 23, 1964. He is a son of Tom Whedon, a screenwriter for Alice in the 1970s and The Golden Girls in the 1980s, and a grandson of John Whedon, who worked on The Donna Reed Show in the 1950s and The Dick Van Dyke Show in the 1960s. His mother, Ann Lee (née Jeffries) Stearns, originally from Kentucky, was a teacher at Riverdale Country School as Lee Whedon, and an aspiring novelist. His parents had both acted, and appeared in a play together at the Harvard Radcliffe Dramatic Club. Whedon is the younger sibling of Samuel and Matthew Whedon and older sibling of writers Jed and Zack Whedon.