<Tr> <Th> Gender </Th> <Td> Male </Td> </Tr> <P> Grover, also known as Super Grover and Grover Monster, is a muppet character on the popular television show Sesame Street . Self - described as lovable, cute and furry, he is a blue monster who rarely uses contractions when he speaks or sings . Grover was originally performed by Frank Oz from his earliest appearances . Eric Jacobson began performing Grover in 1998; he has performed the character regularly since 2001, although Oz still performs him occasionally but not usually . </P> <P> A prototype version of Grover appeared on The Ed Sullivan Show in a Christmas Eve appearance in 1967 . This puppet had greenish - brown fur and a red nose . He also had a raspier voice, and was played a bit more unkempt than Grover would later behave . The monster was referred to as "Gleep", a monster in Santa's workshop . He later made a cameo appearance in The Muppets On Puppets in 1968 with the Rock and Roll Monster . In 1969, clad in a necktie, he appeared in the Sesame Street Pitch Reel in the board room sequences . During the first season of Sesame Street, the character was nicknamed "Fuzzyface" or "The Hairy One", though neither would be used for his actual name . In his book The Tipping Point, author Malcolm Gladwell notes that the character "was used in promotional films for IBM ." </P> <P> In an appearance on The Ed Sullivan Show on May 31, 1970, the character acquired his present name and his appearance was changed to the more familiar puppet with blue fur and a pink nose . In this appearance, Kermit the Frog tried to sing "What Kind of Fool Am I?" (accompanying himself on piano), but Grover repeatedly interrupted him . The true Grover "officially" debuted in the second season of Sesame Street . </P>

When did grover first appear on sesame street