Roberto Orosco

 Roberto   Orozco  ( 1946 - 1989 ) was a Brazilian Muppeteer  who performed  GUGU , the  GROUCH  on Vila  SÉSAMO  , the Brazilian co - production of  SESAME STREET .

Muppeteer Credits

 * Vila  SÉSAMO  ( 1 9 7 2 - 1 9 77 ) :  GUGU