Brianna Hildebrand is an American actress best known for her role as Negasonic Teenage Warhead in the Deadpool film series. Born on August 14, 1996, in Fort Worth, Texas, she began her acting career in theater before transitioning to film and television. In addition to her work in the Deadpool movies, Hildebrand has appeared in various television series, including The Exorcist and Trinkets. She has gained recognition for her talent and versatility, showcasing her ability to portray a range of characters across different genres.