Brianna Caitlin Hildebrand is an American actress. She is known for appearing in the web series Annie Undocumented, and as Negasonic Teenage Warhead in the films Deadpool and Deadpool 2 where she reprised the role, during which her character was confirmed to be the first openly gay superhero in the X-Men cinematic universe. She was also cast as Sasha in First Girl I Loved, starring opposite Dylan ... show more