Joseph Hill "Joss" Whedon ( WEE-dən; born June 23, 1964) is an American filmmaker, comic book writer, and composer. He is best known as the creator of several television series: the supernatural drama Buffy the Vampire Slayer (1997–2003) and its spinoff Angel (1999–2004), the short-lived space Western Firefly (2002), the Internet musical miniseries Dr. Horrible's Sing-Along Blog (2008), the science fiction drama Dollhouse (2009–2010), the Marvel Cinematic Universe films The Avengers (2012) and Avengers: Age of Ultron (2015) and series Agents of S.H.I.E.L.D. (2013–2020), and the science fiction drama The Nevers (2021).
After beginning his career in sitcoms, Whedon wrote the poorly received horror comedy film Buffy the Vampire Slayer (1992) – which he later adapted into the acclaimed television series of the same name – co-wrote the Pixar animated film Toy Story (1995), and wrote the science fiction horror film Alien Resurrection (1997).