​From Wikipedia, the free encyclopedia Arthur "Art" Clokey (October 12, 1921 - January 8, 2010) was a pioneer in the popularization of stop motion clay animation, beginning in 1955 with a film experiment called Gumbasia, influenced by his professor, Slavko Vorkapich, at the University of Southern California. From the Gumbasia project, Art Clokey and his wife Ruth invented Gumby. Since then Gumby and his horse Pokey have been a familiar presence on television, appearing in several series beginning with the Howdy Doody Show and later The Adven…