A new Avengers: Secret Wars rumor suggests an important villain could soon be coming to the MCU. The sequel, Avengers: Secret Wars, then arrives in 2027. Which villain will reportedly be introduced in Avengers: Secret Wars? According to scooper James Mack, per ComicBookMovie, Black Swan will make their MCU debut in Avengers: Secret Wars. Avengers: Secret Wars then follows on December 17, 2027.