Saw this in a thread and thought itd be interesting to look at it cause its pretty sound so im reposting it
Things we know about the next character;
-The Mii costumes will follow a theme related to the character they come with (happened every single time so far)
-Next character has a toy or figurine of himself of some sort (confirmed by Sakurai during Pyra's presentation that the remaining fighters had figurines of themselves)
-Next character won't be from the 2010's (Tournament theory which has been correct so far)
-Next character won't have a fire special move (same as above plus this tournament was delayed by 18 months just to include Pyra)
-Next character won't use his head for any attack at all (Tournament theory)
-Next reveal won't have wings (Tournament theory)
-Next character will have the same name everywhere (from Yoshichad's theory, we know they didn't bring back European voice actors, but now they didn't even record the crowd cheer in English for Kazuya when they did so for Sephiroth and Pyra/Mythra, meaning that the last recording session didn't require an English crowd cheer for both characters).
-Any game that received a spirit event is out as they kept Byleth's game's event for the release of the character.
-Definitely not from Cuphead, Undertale or Shantae since these games received music as DLCs, and are still placed in the unrepresented franchises. Most likely these are out.
Now on the good news;
Next character can be from a franchise that already got a mii costume as, apparently, Sakurai favors following a theme over adding only costumes from the same franchise
Next character could easily be from Nintendo or a Third-party, as nothing indicates the contrary (so nothing favors one or the other)
It'll be a Boomer pick