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.
Eugene Porter
Dr. Eugene Porter is a fictional character from the comic book series "The Walking Dead" and is portrayed by Josh McDermitt beginning in the fourth season of the American television series of the same name. In both mediums he claims to be a scientist who knows the cure to the zombie plague and is being escorted to Washington D.C. by Sgt. Abraham Ford and Rosita Espinosa, and encounter Rick Grimes and his group and recruit them to assist their mission. Eugene is overweight, possesses virtually no survival skills of his own and is extremely dependent on the group, but is highly intelligent and resourceful in using technology to ensure the group's survival. Eventually it is revealed that Eugene is not a scientist, but a high school science teacher, and that he doesn't know how to cure the virus but lied to manipulate the other survivors into taking him to Washington D.C. believing it to be the best chance for survival. This proves true as the group eventually finds the Alexandria Safe-Zone where Eugene becomes its primary engineer. Though his lie puts a strain on their friendship, Abraham eventually forgives him and they resume being friends.