According to Comicbook.com, Caroll Spinney, the puppeteer behind Big Bird and Oscar the Grouch is going to step down from his position after 50 years. Although the characters of Big Bird and Oscar the Grouch aren't going anywhere, Caroll Spinney has announced that he is stepping away from the childhood icons.Spinney has been bringing life to the beloved characters since 1969 and has made the characters household icons.