I suppose she could be either but I am pretty sure it is Rei as well.
http://3.bp.blogspot.com/-muhKx_hjlXI/TY9xT0GTADI/AAAAAAAAAW4/jz7z6mp58TI/s1600/Highschool-of-the-Dead.jpg which is spot on. compared to
http://www.cosplayhouse.com/images/D/Sailor_Moon_Sailor_Jupiter_Makoto_Kino_shoes_ver_02-2-03.jpg
Humongous image.
Well you all can be the judge but I’m almost positive Valentine’s 9th costume or whatever is the Silent Hill nurse.
Also the probably obvious “Aerial Rave” reference to the VS series in general (usually changed to Air Combo for US releases)
And the fish people in SG are called Dagonians.
Not sure if it’s been posted but Parasoul’s f.HP looks and acts much like Dante’s/Vergil’s Stinger attack.
Valentine color 9 is a Sepia tone palette I think the reference to Silent Hill is a coincidence at best.
Nobody noticed Cerebella saying “Gonna take you for a ride!” during her 214LKLP grab?
I did, they’re so many references and hommages in this game that I forget most of them. 
Peacock fully charged item drop.
The one with the steamroller is a jojo’s bizzare adventure reference.
I always thought it was based on Millia’s “Bad Moon” from GG.
It’s one of Ibuki’s chained normals from Pocket Fighter
Has anyone else seen a dog that walks across the bottom of the screen on the park stage? I’ve only ever seen this once, and it was the absolute strangest thing, the dog would walk across the bottom of the screen, then be gone for a while, then come back every 10 to 15 seconds or so. I tried pressing start to see if that would do something, but yeah nothing. I should note this was in an online match.
Is it Hype Dog from BlazBlue? I think it’s Hype Dog.
It is, indeed.
Would be nice if OP were to be updated so we have a full list.
I think someone could summarize all info for one category and post them, so OP could just copypaste it in the first post.
Parasoul’s 10 is Chun-Li
I couldn’t get salty when I got hit by it because it was too awesome.
Parasoul’s cr.MK is the same as the Shoto cr.MK in 3S
Avery might be the best sidekick in all fighting game history.
Hype dog showed up again, but in the middle of some combo. It popped up then walked away and didn’t come back this time.
Viewtiful Joe was based in a movie universe too, so it could mean either or.
Parasoul might say “Egrets, roll out!” during her bike super. Probably a ref to transformers.
She might also say “Egrets, assemble!” during her lv3 super. Ref to the avengers.
Cerebella says “SMASH!” when doing her j.hp, a reference to Hulk’s clap (from mvc3 I think)