Andrew Kreisberg (born April 23, 1971) is an American former television writer, producer and comic book writer. He is best known as the creator of the television series The Flash, Arrow, Supergirl and Legends of Tomorrow. Personal life and education Kreisberg graduated from the Boston University College of Communication in 1993. Kreisberg is Jewish. Career Television His first job was on the short-lived animated sitcom Mission Hill. He has written for several other series including: Justice League, The Simpsons, Hope & Faith, Boston Legal, Lipstick Jungle, Eli Stone, The Vampire Diaries, Star Wars: The Clone Wars, My Family, and Warehouse 13. In November 2015, Kreisberg signed a multi-year deal with Warner Bros. Television, through which he would continue to develop new projects as well as remain the sole showrunner of The Flash, co-showrunner of Supergirl (along with Ali Adler), and executive producer on Arrow and Legends of Tomorrow. In November 2017, his position with Warner Bros. was terminated. Fringe In 2009, he joined the FOX science-fiction/horror series Fringe as a co-executive producer and writer. At the end of season one, Kreisberg left the show. He co-wrote the following episodes: "Midnight" (01.18) (co-written with co-executive producer J.H. Wyman) "Unearthed" (02.11) (co-written with co-executive producer David H. Goodman) Booster Gold In 2011, Kreisberg was hired to write a pilot based on DC Comics hero Booster Gold, for Syfy. The script went through many iterations and was said to be in consideration at the network. This project was shelved since Warner Bros. severed all ties with Kreisberg in November 2017. Arrowverse In 2011, Kreisberg, Marc Guggenheim, and Greg Berlanti began developing Arrow, a re-imagining of the DC Comics comic book character Green Arrow for The CW. In January 2012, The CW picked the project up to pilot. On January 31, 2012, actor Stephen Amell was cast in the title role of Oliver Queen/Arrow. On May 11, 2012, The CW order Arrow to series. It premiered on October 10, 2012. In July 2013, it was announced that Kreisberg, fellow Arrow co-creator Berlanti and DC Comics CCO Geoff Johns would be introducing Barry Allen during the show's second season, with the twentieth episode serving as a backdoor pilot. Actor Grant Gustin was cast and first appeared in the eighth episode of the second season, "The Scientist". The CW producers were pleased with the handling of the character, and greenlit a pilot episode, foregoing the backdoor