The first of four teasers for “Marvel’s Avengers: Doomsday” debuted ahead of the opening weekend of “Avatar: Fire and Ash” on Dec. 23, more than a year before the film’s planned Dec. 18, 2026...

Longtime fans of Marvel Studios have probably given the original “X-Men: The Animated Series” a watch during the time since its original run from 1992 to 1997. However, fans are in luck because Disney...