Imogene and her husband Archie appear to have been best friends with Midge and Joel for many years. They frequently went together to watch Joel perform and attempt to hone is act as a comedian at The Gaslight.
It is revealed in Season 2 they even had their eldest children around the same time.
Imogene is the bubbly, perky loyal best friend of Midge.
Imogene is a young woman with blonde hair who is around the same age as Midge. She and Midge dress in similar fashions that were popular during that era.