Wikipedia
Grundgetta
Grundgetta is a Grouch character from Sesame Street and the girlfriend of Oscar the Grouch. Oscar occasionally calls her Grungie, while she generally calls him Oskie. In addition to being a "couple", they're best friends too. Oscar and Grundgetta, as stated by Oscar and Gordon's sister Olivia, have been friends for "a very long time". Grundgetta first appeared on Sesame Street in 1982.