Question: What mutant character is played by American actress Brianna Caitlin Hildebrand in the 2016 film Deadpool?
Related documents: [0]  [DOC] Negasonic Teenage Warhead (real name Ellie Phimister) is a fictional character appearing in American comic books published by Marvel Comics. The character was created by Grant Morrison and Frank Quitely, and named after the song "Negasonic Teenage Warhead" by Monster Magnet. The character is a mutant who displays telepathic and precognitive powers, and is a student of Emma Frost. [END] 
[1]  [DOC] Brianna Caitlin Hildebrand (born August 14, 1996) is an American actress. She is known for appearing in the web series "Annie Undocumented", and as Negasonic Teenage Warhead in the 2016 film "Deadpool". [END] 
Answer: 
Negasonic Teenage Warhead
Negasonic Teenage Warhead