What character in "Deadpool" did an American actress born in 1996 who starred in Tragedy Girls portray?
Tragedy Girls:  The film stars Alexandra Shipp, Brianna Hildebrand, Josh Hutcherson, Craig Robinson, Kevin Durand and Jack Quaid. Brianna Hildebrand: Brianna Caitlin Hildebrand (born August 14, 1996) is an American actress. Brianna Hildebrand:  She is known for appearing in the web series "Annie Undocumented", and as Negasonic Teenage Warhead in the 2016 film "Deadpool".
Negasonic Teenage Warhead