Short answers, pulled from the story.
Joss Whedon is best known as the creator of the television series Buffy the Vampire Slayer, which ran from 1997 to 2003. He also created the spinoff Angel, the space western Firefly, the internet musical Dr. Horrible's Sing-Along Blog, and directed The Avengers and Avengers: Age of Ultron for Marvel Studios.
Joss Whedon was born on the 23rd of June 1964 in New York City, where he was raised on the Upper West Side. He is a third-generation television writer; his grandfather John Whedon wrote for The Dick Van Dyke Show and The Donna Reed Show, and his father Tom Whedon wrote for Alice and The Golden Girls.
Whedon personally funded Dr. Horrible's Sing-Along Blog, investing just over $200,000. He created it as a response to the 2007-08 Writers Guild of America strike, when corporate funding was unavailable. He later disclosed that he earned more from the project than he did from directing The Avengers.
Serenity received the 2005 Nebula Award for Best Script, the 2006 Prometheus Special Award, and a 2006 Hugo Award for Best Dramatic Presentation, Long Form. A New Scientist poll in 2005 named Firefly the world's best space science fiction, with Serenity in second place.
Beginning in July 2020, Justice League actor Ray Fisher publicly accused Whedon of gross and abusive behavior on set. In February 2021, actress Charisma Carpenter alleged that Whedon had made cruel remarks about her pregnancy, mocked her religious faith, and repeatedly threatened to fire her. Firefly writer Jose Molina corroborated that Whedon made female writers cry during notes sessions as a form of entertainment. Gal Gadot stated that Whedon threatened to harm her career during Justice League reshoots.
Fox cancelled Firefly after one season, having placed it in a Friday night timeslot, aired episodes out of order, and promoted it as a comedy rather than a science fiction drama. Average viewership was 4.7 million and the show ranked 98th in Nielsen ratings. Universal Pictures subsequently acquired the rights and Whedon wrote and directed the film continuation Serenity, released in 2005.