What mutant character is played by American actress Brianna Caitlin Hildebrand in the 2016 film Deadpool?
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:  The character is a mutant who displays telepathic and precognitive powers, and is a student of Emma Frost.
Negasonic Teenage Warhead