Tres Angustias is a boss in Blasphemous, found in Grievance Ascends.They are three ghostly women wearing black dresses which cover the entirety of their bodies, even their faces. Two of them wielding dual pronged spears and the third one a dual-headed mace.
Item descriptions and dialogue indicate that this may be a representation of the three sisters that became Altasgracias and that they are the source of the triune groan that resounds through Jondo. It is possible that this boss symbolizes the anguish and pain of the three sisters.