The attraction will feature King Thanos, a version of the villain who “won,” and superheroes from across the Marvel multiverse. Characters like Werewolf by Night and Man-Thing were pitched for the attraction before they appeared in the special now available on Disney+.
Imagineers couldn’t say much more, except that they were excited to utilize the multiverse and an alternate Thanos for the attractions. The concept art features multiverse characters like Captain Carter, as well as characters from the MCU in different art styles.
Imagineers did also say that Avengers Campus references like W.E.B. may show up in future Marvel shows and films.