Maggie "Mo" Sullivan
First appearance Black Day at Bad Rock
Last appearance Deadly Maneuvers
Portrayed by Tricia O'Neil
Gender female
Occupation medical doctor

Dr. Sullivan was a captain in the Vietnam War. She lives in Bad Rock, where she works as a local physician. She's on a first name basis with the local sheriff.

When she was searching Hannibal for weapons she seemed to be enjoying it, and smiled at him. After he kissed her before saying good-bye she responded enthusiastically.

She was armed and participated in the defence of Bad Rock against the Barbarians Motorcycle Gang.