Ron Marz is a writer, mostly of comic books and graphic novels. He is well known for his work on Silver Surfer and Green Lantern, as well as the Marvel vs DC crossover and Batman/Aliens.

He also worked on the CrossGen Comics series Scion, Mystic, Sojourn, and The Path. At Dark Horse Comics he created Samurai- Heaven and Earth and various Star Wars comics. He has also done work for Devil's Due Publishing's Aftermath line, namely Blade of Kumori.

In 1995, he had a brief run on XO-Manowar, for Valiant Comics. His current creator owned projects include Dragon Prince (Top Cow) and Samurai - Heaven and Earth (Dark Horse).

Geoff Johns is Chief Creative Officer of DC Entertainment. He has written highly acclaimed stories starring Superman, Green Lantern, The Flash, Teen Titans and The Justice Society of America.

He is the author of the New York Times bestselling graphic novels Green Lantern: Rage of the Red Lanterns, Green Lantern: Sinestro Corps War, Justice Society of America: Thy Kingdom Come and Superman: Brainiac, and is the author of DC Comics' biggest, most recent events, Blackest Night and Brightest Day.

Johns has also written episodes of the TV series Smallville and Robot Chicken. He is writing the story of the DC Universe Online massively multiplayer action game from Sony Online Entertainment LLC.