|Mary Lou Barebone|
|Name||Mary Lou Barebone|
|Franchise||Fantastic Beasts and Where to Find Them|
|Vehicles and/or Gadgets||None|
|Occupation|| Leader of the New Salem Philanthropic Society|
Adoptive Mother of Credence Barebone, Chastity Barebone and Modesty Barebone
|Residence||Second Salem Church|
Mary Lou Barebone was born into the Scourer descended Barebone Family. At some point she became the leader of the New Salem Philanthropic Society, an American No-Maj anti-witchcraft group located in New York. Her hatred towards wizardkind led her to adopt children with magical backgrounds in an attempt to suppress the magic within by raising them to despise witchcraft. By December of 1926, Mary Lou had three adopted children.
At some point before December of 1926, Mary Lou was magically assaulted by Auror Porpentina Goldstein because she was physically abusing her son.
On the steps of the Steen National Bank on 6 December 1926, Mary Lou, along with her children, preached to the public in a rally supporting the New Salem Philanthropic Society. After she praised the marvellous man-made inventions of New York, she insisted that the public heed her warnings of the presence of a mysterious force that's wreaking havoc in the city, and she implored the audience that they join the Second Salemers in the fight against wizardkind. From the group of spectators, and unbeknownst that he was a wizard, Mary Lou spoke directly to Newt Scamander, asking if he was a seeker of truth, before he ran into the bank.
Langdon Shaw, a believer in magic, brought Mary Lou and her children to his father, Henry Shaw Senior's office in an attempt for them to garnish the support of his newspaper company and his elder son's reelection platform. The meeting escalated quickly as Henry Shaw Junior called her son Credence a freak. Understanding that the Shaw family was not going to support the Second Salemers, Mary Lou politely bid them a good bye.
The next day, her son Credence found a seemingly real wand under her daughter Modesty's bed. As soon as the girl arrived to protest that it was just a toy, Mary Lou entered and was appalled to see what her son was holding. As Credence removed his belt so she could punish him, Mary Lou snapped the wand in half and Modesty confessed saying the wand was hers. Before she could beat Credence, the belt suddenly flung out of Mary Lou's grasp, injuring her hand, and as she went to pick it back up again, it again magically flew away. After she turned to confront her children, Mary Lou was attacked by an Obscurus. She was flung against the rafters of the chapel and fell dead with formidable marks covering her face.
- Mary Lou is portrayed by Samantha Morton in the Fantastic Beasts and Where to Find Them film series. She returned to voice her ingame.