His other work in television includes writing and producing various episodes of Blade, Smallville and Arrow. He co-developed the TV series The Flash (2014–2023), Titans, (2018–present) and Doom Patrol (2019–present) and created and produced the TV series Batwoman (2019–2022), Stargirl (2020–2022) and Superman & Lois (2020–present). The franchise's highest-grossing film to date is Aquaman, written and produced by Johns, which earned over $1.15 billion worldwide, becoming the highest-grossing DC film to date. Johns' involvement with DC Entertainment as producer, writer and executive has helped turn the DC Extended Universe franchise into the eleventh-highest-grossing film franchise of all time, having grossed over $5.6 billion at the global box office. In film, he was a producer or executive producer of Green Lantern (2011), Batman v Superman: Dawn of Justice (2016), Suicide Squad (2016), Wonder Woman (2017), Justice League (2017), Shazam! (2019), Birds of Prey (2020), co-wrote and produced the story for Aquaman (2018) and wrote the screenplay for Wonder Woman 1984 (2020). He is the co-founder and former co-chairman of DC Films and former co-runner of DC Extended Universe until 2018. He served as Chief Creative Officer (CCO) of DC Entertainment from 2010 to 2018 and as President and CCO from 2016 to 2018. Among the DC characters and concepts he co-created are Larfleeze, Indigo Tribe, Red Lantern Corps, Atrocitus, Black Lantern Corps, Jessica Cruz, Hunter Zolomon, Tar Pit, Simon Baz, Bleez, Cyclone, Miss Martian, and Kate Kane. He also expanded the Green Lantern mythology, adding in new concepts and co-creating numerous characters.

He co-created the DC character Courtney Whitmore based on his deceased sister.

Johns's work on the DC Comics characters Green Lantern, Aquaman, Flash and Superman, has drawn critical acclaim.

Geoffrey Johns (born January 25, 1973) is an American comic book writer, screenwriter, and film and television producer. Television: The Flash, Titans, Doom Patrol, Batwoman, Stargirl, Superman & Lois Comics: JSA, The Flash, Teen Titans, Green Lantern, Infinite Crisis, 52, Action Comics, Blackest Night, Flashpoint, Doomsday Clock, The Avengers

The Flash, Vol. 1 by Geoff Johns