|Franchise||Fantastic Beasts and Where to Find Them|
|Vehicles and/or Gadgets||None|
|Residence||Second Salem Building|
Modesty was born about 1918 in the United States. She lived in a tenement in The Bronx with her mother, father, and nine siblings. However, she was adopted by No-Maj anti-witchcraft activist Mary Lou Barebone, perhaps because her parents had more children than they could care for or because they were magical. Afterward, she missed her brothers and sisters, and would talk about them to her older adoptive brother Credence. The fact she remembered her original family suggests she was at least two or three when Mary Lou adopted her.
Under Mary Lou's rules, Modesty spent much of her time singing anti-witchcraft rhymes while playing hopscotch.
A precocious child, Modesty learned to hide disobedient behaviour from her strict mother, as she was aware of the abusive treatment that her older brother, Credence, received. but out of sight of her mother (and her similarly zealous older adoptive sister, Chastity), she rebelliously threw away New Salem Philanthropic Society leaflets.
On 7 December 1926, Credence went into Modesty's room and found a toy wand under her bed. Modesty arrived and protested the it was just a toy, but as they argued Mary Lou entered and was appalled to see what Credence was holding. As Credence removed his belt so his adoptive mother could punish him again, Modesty confessed saying the wand was hers. Suddenly, the belt whipped out of Mary Lou's grasp, injuring her hand. As she went to pick it up, it was magically flung away.
Turning to confront the children, Mary Lou was attacked by an Obscurus, flung against the rafters of the chapel and fell dead with tell-tale scratches covering her face.
Terrified of the incident, Modesty ran away to her old childhood home to hide. With the help of Credence, Percival Graves found her, believing her to be the Obscurial he was after. Graves found Modesty hiding in a corner, shaking, terrified, and confused, whimpering at the sound of Credence's name. Just as she was about to come towards Graves, an opening in the walls broke open revealing Credence to be the true Obscurial. Confronting Graves for his betrayal, Credence quickly lost control of his power and became a fully corporeal Obscurus flying away with Graves following, leaving Modesty all alone once more.
- She is played by Faith Wood-Blagrove. Faith returns to reprise Modesty in LEGO Dimensions.
- She acts as the Citizen in Peril for all of the Fantastic Beasts levels in the Story Pack.