Fanon Discontinuity / DC Animated Universe

• Justice League:
  • The two-parter story "The Once and Future Thing" attracted a lot of flak from both Batman/Wonder Woman shippers, haters of Batman Beyond and even Batman fans when it proved that the series Batman Beyond was the canonical future of the DC Animated Universe, with Bruce going on to end up a lonely, bitter old man.
  • The episode "Epilogue" also took flak from many fans of Batman Beyond when it revealed that Terry McGinnis was actually the biological son of Bruce Wayne, courtesy of well-meant meddling from Amanda Waller. Many fans rejected this because they disapproved of the idea that Terry McGinnis was "genetically destined" to be the next Batman, instead of being an ordinary person who chose to be extraordinary, like Bruce himself. Shipping wars were another major reason for the Broken Base, as "Epilogue" establishes that Terry's relationship with Dana (unpopular with many fans) is stable and long-term, implying they will marry, in stark contrast to fanon that had them breaking up shortly after the series ended.
  • Most fans won't acknowledge that Supergirl stayed a thousand years in the future because she fell in love with a cyborg that she only said about 3 sentences to.
• Quite a few fans of the DCAU like to think of Batman Beyond (specifically, Return of the Joker) and its Spin-Off The Zeta Project as an alternate future rather than the canon one, as they don't want to live with the knowledge that Tim Drake will be so brutally tortured and Mind Raped that it takes him the next couple of years to fully recover, essentially making the entire history of the DCAU Bat-family a case of Shoot the Shaggy Dog. Considering what DC is doing to Tim in the comics? It almost makes anything the Joker does to him look tame. There are also people who just don't want to think of Bruce Wayne as a withered-looking old man or anyone else running around in the Batsuit.
• The offscreen relationship between Bruce and Barbara that occurred between Batman: The Animated Series and Batman Beyond is well-hated by fans, due to the Unequal Pairing aspect and the implications of a love triangle between a father and adopted son. Said fans were further enraged when Batman Beyond 2.0 #28 and 29 spelled out how it went down. And now this unfortunate pairing has taken an animated film that the fandom has been eagerly awaiting and has instantly turned it into something despised.
• Some fans of the DCAU do not consider Static Shock, Gotham Girls, and The Zeta Project as canon, mainly because of their more "childish" nature, and not being created by Bruce Timm and Paul Dini (Dini did create Gotham Girls, though). Same with the Lobo (Webseries), except it is not childish but blatantly for adult audiences. However, in addition to several DCAU crossover episodes, including a Batman Beyond crossover, Future!Static also appears in an episode of Justice League. Because of Static being mentioned meeting with Green Lantern in a JLU episode, which did happen in SS, some fans use Broad Strokes.
• The 2017 DTV animated film Batman and Harley Quinn is confirmed by Bruce Timm and WB to take place in the DCAU (it has a near-identical art style as The New Batman Adventures, has Loren Lester reprising his role as Nightwing for the first time since 2003 and contains many call-backs to DCAU shows). Some people who watched it strongly disagree, due to it's more vulgar and immature style of writing and showing another case of No Yay when Harley essentially rapes a tied-up Nightwing. Some fans feel the impact of Harley's defection from The Joker is also rendered pointless by future events, as Harley winds up going back to The Joker anyway in time for the events of the flashback sequences of the Batman Beyond movie Return of the Joker, where she's more than willing to mentally abuse a child in order to have one of her own.