r/MCUTheories is a subreddit with 169k members. The most common flair used is theory, discussion/debate, spider-man: brand new day, avengers doomsday, and the hardest choices require the strongest wills..
The place to drop your theories about the MCU. Spoilers are allowed but please tag them as such.
Flair Used in r/MCUTheories
#1
Theory
: "I think we are getting Mephisto back in Ghost Rider, right?"
41 posts
#2
Discussion/Debate
: "Do you guys think this is just going to be ignored?"
28 posts
#3
Spider-Man: Brand New Day
: "MJ Venom Theory."
19 posts
#4
Avengers Doomsday
: "Any thoughts on this new strat? It looks like they are trying to fight the Money Grab allegations"
16 posts
#5
The hardest choices require the strongest wills.
: "Thank you all!!"
2 posts
#6
I’ve come to bargain
: "Avengers Doomsday: Act Three"
2 posts
#7
UMM???
: "Tom Holland might have just accidentally leaked Tobey Maguire's return in the upcoming Avengers Movies"
1 post
#8
You’re all variants!
: "Who is the anchor being from each major universe?"
1 post
#9
Fan Made Script
: "My Version of Avengers: Doomsday (Fan Script – No Leaks)"
1 post
#10
UMMM?
: "Tom Holland might have just accidentally hinted at Tobey Maguire's return in the upcoming Avengers Movies"
1 post
Member Growth in r/MCUTheories
Yearly
+64k members(60.8%)
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Last updated: July 30, 2026