Walking Dead Hero Initiative Rob Guillory CGC 9.8. The item "Walking Dead Hero Initiative Rob Guillory CGC 9.8" is in sale since Tuesday, October 13, 2020. This item is in the category "Collectibles\Comics\Modern Age (1992-Now)\Horror & Sci-Fi". The seller is "jillydix" and is located in Point Roberts, Washington. This item can be shipped worldwide.