ROBERT KIRKMAN is best known for his work on "The Walking Dead "and "Invincible "for Image Comics, as well as "Ultimate X-Men "and "Marvel Zombies "for Marvel Comics. He is one of the five partners of Image Comics and is an executive producer and writer on "The Walking Dead "television show.

Mark Waid, Alabama native and current Los Angeles resident, has written stories for every major comic book publisher, and his seminal graphic novel, KINGDOM COME, for DC Comics, is one of the best-selling graphic novels of all time. For BOOM! Studios, he has written bestselling graphic novels POTTER'S FIELD, INCORRUPTIBLE and the multiple Eisner and Harvey Award-nominated IRREDEEMABLE. Peter Krause is an American comic book artist. He is best known for his work on various DC Comics titles, most notably the Superman-related titles and THE POWER OF SHAZAM! with Captain Marvel and the Marvel Family. Krause, a graduate of the University of Minnesota, currently works as a freelance illustrator in Minnesota.

Back in print! After the traumatic events of Volume 3, Mark Grayson (a.k.a. Invincible) is left to pick up the pieces and try to continue on with some sort of life. His mother is a wreck, and his friends don't understand and the super-villains of the world just want to beat him up. Mark has a lot on his shoulders and graduation is just around the corner.