Clementine is Forgetful Jones' long-suffering girlfriend. She gets frustrated about Forgetful's bad memory, and tries to help him remember.
She appeared on Sesame Street from Season 11 to Season 24. Her main function was to help Forgetful remember things, and while he appeared on the show without her very frequently, she was seldom seen without him. Notable exceptions include when she was singing about the house she grew up in (My Triangle Home) and when she told Gladys the Cow about responsibilities at the "R" ranch. She also took center role in a clip with Bad Bart coming to town, in which she warned the folks at the saloon about it, while Forgetful was playing the piano and had no lines.
Her name is a reference to the song "My Darling Clementine".