A recruit with dragonfly wings who is offered a place at the table by the wrong side first.
Angel Salvadore has insect-like wings and can spit acid, and she defects from the X-Men to the Hellfire Club. Zoe Kravitz plays her.
The defection is the moment First Class is making its actual argument. Shaw offers her something the CIA never does: he tells her she does not have to hide. The film knows he is a monster and knows the offer is real, and it does not resolve that.