Ask Lemmy
A Fediverse community for open-ended, thought provoking questions
Please don't post about US Politics. If you need to do this, try !politicaldiscussion@lemmy.world
Rules: (interactive)
1) Be nice and; have fun
Doxxing, trolling, sealioning, racism, and toxicity are not welcomed in AskLemmy. Remember what your mother said: if you can't say something nice, don't say anything at all. In addition, the site-wide Lemmy.world terms of service also apply here. Please familiarize yourself with them
2) All posts must end with a '?'
This is sort of like Jeopardy. Please phrase all post titles in the form of a proper question ending with ?
3) No spam
Please do not flood the community with nonsense. Actual suspected spammers will be banned on site. No astroturfing.
4) NSFW is okay, within reason
Just remember to tag posts with either a content warning or a [NSFW] tag. Overtly sexual posts are not allowed, please direct them to either !asklemmyafterdark@lemmy.world or !asklemmynsfw@lemmynsfw.com.
NSFW comments should be restricted to posts tagged [NSFW].
5) This is not a support community.
It is not a place for 'how do I?', type questions.
If you have any questions regarding the site itself or would like to report a community, please direct them to Lemmy.world Support or email info@lemmy.world. For other questions check our partnered communities list, or use the search function.
Reminder: The terms of service apply here too.
Partnered Communities:
Logo design credit goes to: tubbadu
view the rest of the comments
The short answer is DC, but it's a complex question.
Golden Age comics all had their own siloed enviroments, and it wasn't until the 1940 All Star Comics #3 introduced the Justice Society that they even shared a universe. All Star would later merge with two other publishers to form DC.
Wonder Woman was the first character to visit an parallel Earth in 1953, where different versions of everyone lived alternate lives.
DC rebooted all of their characters, starting the Silver Age of comics. In 1961, Silver Age Flash Barry Allen crossed over to the Golden Age world, meeting Jay Garrick. This is considered the true beginning of the DC Multiverse as a plot point. The Wonder Woman parallel world would occasionally pop up, but wasn't a major part of the continuity the way Flash of Two Worlds was.
Marvel introduced their own Multiverse in the 1970s in the Captain Britain series, and the idea became the basis for the popular What If...? series.
DC also introduced the Multiverse in their Arrowverse/Supergirl crossover event, establishing that all of the TV shows and movies could theoretically cross over, but the DC shows were far better received than the films.
My favorite thing about the internet is hearing questions that I would never think to ask and seeing answers like this.
Thank you for helping to make the internet a bit more interesting.