DRG4's X-Men the Animated Series Page
Episode guide, guest appearances list, images, animated gif, sounds and video clips, polls, message board and chat room.

IMDb: X-Men
Cast and crew list, reviews, and production information for the animated series.

Nabou.com: The X-Men: The Animated Series
Complete episode list with summaries and voice cast.

Pazsaz Entertainment: X-Men Cartoon Series
This site features a cast list, an episode guide with a synopsis for each show, and some background on the X-Men and the series.

Videoflicks: X-Men
Reviews, plot summaries and ordering information for all available X-Men animated VHS Video and DVD titles.

Wikipedia: X-Men (animated series)
You write the pages, as much or as little as you like, describing your favorite of all the episodes of X-Men: the Animated Series.

X-Men Animated Series
Episode guides to both animated series, character biographies, the shows' comic book background, some movie information, links and interactive fun are all covered here.