He worked basically for all the comic companies including DC (Legion of Super-Heroes, Doctor Fate, 52, Countdown to Final Crisis), Marvel (Annihilation, Drax The Destroyer, The Defenders), Dark Horse (Division 13, Agents of Law, and Valient Comics (X-O Manowar, Magnus, Solar). He even took a break from comics to storyboard for TV which including working on The Real Ghostbusters, Static Shock, Batman Beyond, and Spider-Man Unlimited).
What I listed is just a fraction of his writing and artistic output. His influence on the comic world is basically everywhere as many current artists and writers drew inspiration from his work, Marvel movies, DC movies, and more. A true legend has died. Condolences to his family on their loss.
Keith was one of the most brilliantly creative humans I’ve ever known. A curmudgeon with a heart of gold. A generous collaborator. An old, dear friend. And, as my wife observed, “He was like a character out of a Keith Giffen story.” Safe travels, Keith. You will be missed. - J.M. DeMatteis
I adored Keith Giffen.
Spending half an hour with him meant hearing so many original ideas it made you dizzy.
Everyone told me he could be crabby, instead, he was lovely and generous to me every time we talked.
I will always be a fan and carry awe for that man. - Gail Simone
Gutted to hear the passing of the legendary comic book creator Keith Giffen. He personified creativity to me in everything he did. Whether it was writing, plotting, drawing, kibitzing or creating—Keith did it like no other in the modern age. - Jim Lee
When it comes to sheer creative talent and the ability to come up with great ideas, one after another, no one did it better than Keith Giffen. Working with him was one of those fun, creative roller coaster types of experiences that made any project more fun. R.I.P, my friend. - Dan Jurgens