Katherine Thorn is a fictional character from the horror film series The Omen. She is the mother of Damien Thorn, a child believed to be the Antichrist. Katherine's character is central to the plot, as she struggles with the dark events surrounding her son and the sinister forces at play. In the original 1976 film, Katherine is portrayed as a loving mother who becomes increasingly troubled by the strange occurrences linked to Damien. Her character embodies themes of maternal instinct and the battle between good and evil, making her a pivotal figure in the unfolding horror narrative.