Grover, also known as Grover Monster, is a Muppet character on the popular television show Sesame Street. Self-described as lovable, cute and furry, he is an indigo monster who almost never uses contractions when speaking or singing.Grover was originally performed by Frank Oz from his earliest appearances until 2001. Eric Jacobson began performing Grover in 1998; he has performed the character regularly since 2001, although Oz still performs him occasionally.