Joseph Hill "Joss" Whedon (/ˈwiːdən/ WEE-dən; born June 23, 1964) is an American screenwriter, director, producer, 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 film The Avengers (2012) and series Agents of S.H.I.E.L.D. (2013–2020), and the science fiction drama The Nevers (2021).