My prediction on how the characters making their fighting game debut that haven’t been revealed yet will be like
Alice: Since she is a student of Kim’s and a Terry fangirl, I see her using Taekwondo as her fighting style and could use her own version of Terry’s iconic moves. Seeing as she’s seen with a basketball in some pics, I can see her using one in her fighting style (or something else sport related).
Brazilian Ninja: To differ from Mai and Nakoruru (and since he doesn’t look like a traditional ninja) I see him having his own twist to his ninja style. He’d have a unique weapon and/or element.
Latin Girl: I see her using caporiera. She’d be fast and would use tricky moves. Instead of her using traditional caporiera, she’d have dances that’d she use when fighting. I could also see her Toucan coming in her moves.
Kim’s Master: I see him using Taekwondo. And to differ from Kim’s traditional style and Luong’s feminine/flexible style, he’ll be rougher and heavier with his moves.
Newcomer Prisoner: Like Chang and Choi, he’ll have a weapon. Design wise, he comes off as a voodoo priest to me. So I could see him using a cane and having voodoo attacks and powers.
Geese Butler: I think he’ll be inspired by Sebastian from Black Butler. Will have a classy personality and has a elegant bit deadly fighting style.
Masked Girl: She is said to have multiple masked and has different fighting styles for each one. So I see her having mixed Chinese martial arts as her fighting style.
Hooded Man: Seeing as he is suppose to be mysterious, I see him having a supernatural fighting style. Perhaps one with teleports and such.
Demon Boy: He’d likely have a cool version of an existing fighting style. He’d also use his Demon powers.
Pillow Child: As said before, they’ll have a sleep fighting type fighting style. So I see them having a drunken fist type style (except sleepy instead of drunk).
Mui Mui: She’d have a fighting style similar to Chun Li/Pai Chan’s. But she’d also have a dragon mode where she turns super human and becomes really powerful. Would also have fire balls.
Love Heart: Would have a fighting style that would be a mixture of XDZW Jack and Cloud. She’d mainly fight with her sword and use her boozokas in some moves. Also her pet Airl will assist her in certain moves.