Lou Scheimer , a pioneer in Saturday morning and weekday afternoon television cartoons with hit shows such as `` Superman , '' `` Fat Albert '' and `` He-Man , '' has died at 84 , according to his biographer . Scheimer died Thursday , said writer Andy Mangels , who said he spoke with Scheimer 's family . Amy Rosenberg , Scheimer 's daughter-in-law , confirmed his passing as well . Scheimer was a founder of Filmation , which began producing Saturday morning staples in the 1960s , including superhero stories and an animated version of `` Star Trek . '' Later , the studio found hits with `` Fat Albert and the Cosby Kids , '' `` He-Man and the Masters of the Universe , '' and `` She-Ra , Princess of Power . '' Scheimer occasionally did voice work on the cartoons . Filmation 's library was purchased by DreamWorks last year . People we 've lost in 2013 .
Scheimer was a pioneer in Saturday morning cartoons such as `` Superman '' His Filmation studio later produced `` Fat Albert , `` He-Man '' and `` She-Ra '' Scheimer 's voice appeared on some cartoons . He also voiced the character of The Great Gazoo'in the animated series " Scooby-Doo "