Update #79 - New Shards and Graphical Updates

Galamoth

Never seen Bloodless as a Vampire. I think she/he/it is a demon. And Miriam is slowly turning to a demon, a legion. I still think she and Gebel are connected somehow. Same source.

Theme of Bloodstained, so far, are the concept of Hell. We have seen what could be werewolf and vampire, but I believe they are still demons in shapes we've seen before.

Enkeria
Well we won't know for sure till the game comes out (I suppose perhaps even then we won't know for sure) but in the interview for the voice actress that plays Bloodless, the lovely Rena Strober, they openly refer to Bloodless as a vampire and female, but hey everyone can have their own head canon.

Time 4 Tea I'm sure IGA is following his old method regarding bosses. It seems easier to balance things out.

Galamoth  We have to remember that vampires CAN be demons too.
Bloodstained didn't went deep on that yet, but we need to see things in a "meta" scale for now. Castlevania games had angels and holy creatures and basically all monsters were part of the supernatural or Dracula's experiments. On Bloodstained, the castle itself comes from hell and all creatures has been labeled as demons, so far. We can speculate that EVERYTHING supernatural can be a "demon" of sorts.
What i'm trying to say is that Bloodless can be both a vampire and a demon, where being a "vampire" is just a type of demon. Undead could be another type of demon and so on.
Zangetsu considers shardbinders to be demons themselves due to pure hatred he feels for them.

Gremory seems to be a high-ranking demon herself and maybe some of the Goetia demons have a higher level of influence.

We know very little of Bloodstained "universe" so far, but i think we can speculate that people (maybe alchemists themselves) simply refers to anything non-human, such as monsters, shardbinders, vampires and anything else, generically as "demons".

Considering Bloodstained is a new franchise, the possibilities are endless. Maybe earth had some supernatural beings (such as vampires, undead, alchemists, mages) since ever but they were always hidden (Masquerade style)? Maybe just now the common folk are really having huge contact with such beings and the commoners considers everything as demons...
Such organizations of what is a demon, what is a vampire and so on, would be something to just show up in later games of the franchise (if it exist) when researchers / heroes / plot / lore starts to really stablish what is REALLY going on.

Just like the whole lore of "Dark Lord" in Castlevania just showed up much later, in the later years of the 20th century.

If we take the few hints Bloodstained showed up to now, we can see that the characters themselves are a bit lost on what is really happening. Gebel seems to be aware and calls monsters as demons. Johannes says that the Liber Logaeth is a book for the "summoning of spirits". He doesn't say demons, but spirits. Dominique has powers and is a exorcist of the church. The church is BUYING SHARDS, that are demon power crystalized, to purify them. Zangetsu seems to be a killing machine wreacking havoc on anything supernatural, even shardbinders that aren't demons (or they are?) Each being is trying to figure out what is happening on their own accord. To me, it feels like no one (that includes Gebel) has a clue of the bigger picture.

ALSO, considering IGA himself said that one of the themes of this game, the stained glass, was actually crafted when he decided to, instead of using completely supernatural beings (such as vampires), to use "engineered humans". That goes to a whole lot new level of discussion, known as "What Measure Is a Non-Human?"

I know this went far off from the original question of Bloodless being a vampire, but i suddenly had those thoughts and wanted to share too.
I don't know if i made myself clear lol

If that's how you feel you'd probably be best served not to spend too much time with the game's Bestiary. While I don't expect it to contain current year gender pronouns I would expect at least a reference to demon type classification.

Well as I said it's not my place to tell anyone what their head canon has to be, however I for one want as painstakingly detailed of a mytho's surrounding each and every monster in the game, like literally I'd love it if each monster had at least two pages of info on what they are, why they were there and yes whether they are boys or girls. I want to learn every possible detail the creators thought up and meant for theses monsters, if I wanted to make up my own story for them I'd write it out.

I hope that the retro strategy guide will have an extensive bestiary that I can spend hours reading up on. Thats unlikely I know but I can hope.... And Playboy Playmate Bunny Succubus? YES PLEASE!!!

Yes I made. 
Thanks( ＾ω＾ )

Clear
Chrono Cross has it's charms as well, and that theme song Radical Dreamers... Beautiful!