Crossfire (William Cross) is a fictional character, a supervillain in the Marvel Comics universe. He was created by writer Steven Grant and artist Jim Craig in Marvel Two-in-One #52 (June 1979). Crossfire is the cousin of Darren Cross. Yup and besides being realistic by using certain firearms and being a skilled gun man, Crossfire is the best choice for the upcoming Ant Man and the Wasp film is definitely because the Yellowjacket from Ant Man (2015) was his cousin Darren Cross who was played by Corey Strolls. And because Scott Lang as Ant Man killed Darren by messing up the functions of his Yellowjacket suit while going subatomic causing Darren to implode out of existence, there is no better villain for Marvel to choose than one who is willing to retaliate over a death in the family which is why Crossfire is sure to be the villain for the upcoming Ant Man and the Wasp film. And for the actor that Marvel should cast on portraying Crossfire, the one man that should be fit for the role is Die Hard actor Bruce Willis.
Bruce Willis has been known for many roles that involves crime, action, comedy, any that involves shoot outs as well as him playing a character that acts like a jerk and someone who acts whacky with anger management issues, and because the Ant Man films are partially comical, Marvel should definately consider giving one of LA's most popular actors a try for the Ant Man sequels villain and Willis should be the guy to play Crossfire. And once Crossfire is confirmed to be the villain for Ant Man and The Wasp, he will hunt down Scott and kill anyone close to him to avenge his cousin's death and both Lang as Ant Man and Hope van Dyne as the new Wasp are gonna do what ever it takes to bring him down.