This is fascinating. There are too many issues for it to be probably real or fake, but the strangest thing to me is that these costumes are revealed and what they could mean. Like, why show off some Mii costumes and not Terry??
I don't think they hint towards a character. If they do, why would the costumes be revealed alongside Terry and not Doomguy or Geno? Why would they be available now? Also, the use of Ken is super suspicious - the person "leaking" this video knows their audience too much. Those two characters? A reference to the Ken leak? Suspicious. Plus in the Ken leak the timer read 02:30, not 2:30.
It could be that we are getting the return of the full Geno costume, a Mallow costume, a Doomguy costume, and a Cacodemon costume.
I don't know. Things are weird. Obviously I'm holding out hope for my most-wanted til the very end, but this is super interesting and very exciting. I'm more on board with either Geno or Doomguy now that I've somehow lucked out and gotten Terry so no complaints here if those come true but there's too much that's giving me pause for me to really commit either way right now.
Anyway, even after all this, we have an indeterminate amount of characters incoming so who knows what cool **** could be in the pipeline.