Shane Walsh (The Walking Dead)
Shane Walsh was created by Robert Kirkman and Tony Moore, the writer and original artist of "The Walking Dead" comic book series. The character first appeared in the first issue of the comic book series in October 2003, but was expanded upon greatly in the television show adapted from the comics in 2010. As a result, Shane lives much longer in the chronology of the story in the show than he does in the comics. Kirkman described the comic book version of Shane's character as a short and quick "wham, bam, thank you ma'am" arc compared to that of his counterpart in the television series. Kirkman said he preferred the show's version of Shane and that the differences between the two versions of the character illustrate the ability to explore and evolve elements from the comic book in different ways on the show.
Chandler Riggs
At age 10, Riggs was cast in his biggest role to date: Carl Grimes in "The Walking Dead", an AMC horror drama television series. Grimes, his family and friends fight to survive in a violent apocalyptic world populated with zombies and the few surviving humans, some of whom are even more diabolical and dangerous than the zombies themselves. The series is the highest rated in cable television history and has smashed all previous ratings records. 
Riggs had previously worked with the show's executive producer Gale Anne Hurd on "The Wronged Man".