Katherine Waterston stars as Porpentina Goldstein in the Fantastic Beasts and Where to Find Them series. Set in the wizarding world created by J.K. Rowling, the series follows the adventures of Newt Scamander, a magizoologist, as he travels the globe in search of magical creatures. Waterston's character, Porpentina, is a former Auror who becomes involved in Newt's quest to protect these creatures from harm. The series is filled with magic, adventure, and a touch of romance, as the characters navigate the challenges of a world on the brink of war. Katherine Waterston's portrayal of Porpentina brings depth and vulnerability to the character, making her a fan favorite in the series.