|Occupation:||Bruce Wayne's assistant|
|Played by:||Kimberly Scott|
Margaret is first mentioned when Bruce leaves Wayne Enterprises electronics division, mentioning that Edward Nygma should call her to set up a meeting for he and Nygma later on. She is later seen accompanying Bruce during the murder investigation of Fred Stickley at Wayne Enterprises.
She reminded Bruce that suicide was not covered under their company's life insurance policy, which Bruce dismissed. It is also revealed that she recieves frequent calls from Gossip Gerty about Bruce's social life. Margaret was also present when The Riddler's first riddle is discovered by Bruce on his desk in his office.