After was an episode of The Walking Dead written by the comic book writer who also created what other series?
After (The Walking Dead):  The episode was written by Robert Kirkman and directed by Greg Nicotero. Robert Kirkman: Robert Kirkman (born November 30, 1978) is an American comic book writer best known for creating "The Walking Dead" and "Invincible" for Image Comics, in addition to writing "Ultimate X-Men" and "Marvel Zombies" for Marvel Comics.
Invincible