Complex sentence: In June 2010, he revealed via Twitter that he was to appear in the AMC television series "The Walking Dead" as Merle Dixon, one of the survivors of a zombie apocalypse.
Split into simpler sentences: In June 2010, he revealed via Twitter that he was to appear in the AMC television series "The Walking Dead". In the series, he portrays Merle Dixon, one of the survivors of a zombie apocalypse.