The guitarist says it is a dream come true to star as a "walker", the name given to the living dead, in the post-apocalyptic thriller series.
He will appear in the hit show's fifth season, which is currently airing on America's Amc network.
Ian has told of his excitement at filming alongside Andrew Lincoln, who plays lead character Rick Grimes, as he is a long-time fan of the show and has previously appeared in a Walking Dead online mini-episode.
While being made up as a zombie, the rocker even filmed himself in the show's special-effects department and featured the clip in an episode of his webseries, Bloodworks.
In the video, he says, "I'm a massive fan of the show. I just felt like, from the start, 'God damn it would be the coolest f**king thing if I could get to be a walker'... Just to see Andrew Lincoln standing there, it's surreal to watch him kill walkers... and I'm gonna be one of them. I'm just so f**king excited to be part of it."