In the latest chapter, I have noticed how Oda foreshadowed Black Maria being a spider of some sort and I’m guessing that she might be a Jorōgumo.
Here’s a quick definition if you don’t know what a Jorōgumo is: “a Jorōgumo is a yôkai with the form of a spider, that can change its appearance into that of a seductive woman when it wants to eat a human. This Yōkai is a skillful deceiver and a powerful shapeshifter , they usually spending their lives appearing as young, sexy, and stunningly beautiful women.”
Sorry for the long definition but the Yōkai does resemble Black Maria in many ways. Also Jorō-gumo’s favorite prey is young, handsome men who are looking for love. This would make sense because she took a liking to sanji even tho they have never met.
When Sanji first enters the banquet hall there’s a huge spiders web blocking the entrance and also look at the bottom left corner in the 5th panel, you can see kimonos that are hung up, what if those kimonos belong to the people who fell for the same trap like Sanji, to further add on to this, notice how one of the prostitutes said “ we have another naive warrior of justice in the bag”.
If you look at Black Maria’s head, her pins, blade, and horns look like 8 black legs! Seems like a hilariously cocky way to foreshadow her having a spider-related devil fruit.
Now that we know part of Black Maria’s official colour scheme, with her most prominent colours being Red, Yellow, Black (based on her hair colour and the flower pins), her colors actually perfectly match that of the actual Jorōgumo.
Black Maria not being a Dino Zoan would be very unique to her character, maybe she might be some agent and will switch sides because she might fall in love with Sanji in some funny way or she wants to get revenge on Queen or King.
*Theory by Initial_Space1001