A comic legend behind some classic works has passed away on Sunday at 60 years of age. A quick rundown on some of his comic works include the 70s cult classic Howard the Duck, Man-Thing and Foolkiller. Some of his work in other mediums include Thundarr the Barbarian (one of his creations), GI Joe: A Real American Hero, The New Adventures of Batman, Transformers and Star Trek: The Next Generation.