|Portrayed by:||Diane Pershing|
|Only Appearance:||Robin's Reckoning Part I|
|Appears in:||1 episodes|
|Mary Grayson Gallery|
Mary Grayson was the mother of Dick Grayson.
Together with her husband and son, Mary formed the Flying Graysons, an acrobatic team performing for Haley's Circus. They performed death-defying stunts without the aid of a net. In an attempt to convince Mr. Haley to pay "insurance", Tony Zucco sabotaged the trapeze. During the show, in front of the entire crowd and young Dick; John and Mary fell to their deaths when the line snapped.