i broke down and used a mermaid doll maker to make the previous gen mermaids. creds to elequinoa's online mermaid maker. human forms are kinda wonky but i'm planning on doing more for them later. idol forms coming eventually. link to maker:
Vanora - yeah this is pretty much how i imagine her. hair a lil less red & more orange in mermaid form but she's pretty close. i like the inhuman orange skin tone on her mermaid form too, it just kinda fits.
Lorelei - Grey hair was not an option so this is what she looked like in youth. wasn't really an inhuman skin tone i liked so went with a human one in mermaid form. human form outfit not accurate at all, lorelei loves poofy dresses in human form but didn't have an option for that. hair & general appearance accurate tho.
Aurora & Celeste (mermaid form) - know you're gay and all your other secrets. i really can't improve on this design tbh this is exactly how i imagine them. the inhuman blue/purple skin tones didn't look great on them so i opted for human ones for their mermaid forms.
Aurora & Celeste (human form) - double the gay. Aurora's hair would be more dark brown rather than blue but once again, didn't have many options. this is pretty spot on otherwise.
Isla - I tried the blue-ish skin tone on her mermaid form, did not work out. it made her kinda look like star platinum & was not a fan so ended up going with a human tone. anyways obviously hair should be much lighter blue in mermaid form.
Kaya - would have grey in her hair along with more bright pink but once again, no option for it. i like the pink skin tone of her mermaid form a lot. she & cora like to braid each other's hair in mermaid form. i really like her human design tbh. it captures the poise she tries to give off.
Cora - mermaid form pretty much exact. i like the green skin tone on her. her human form looks a lot like sailor jupiter i'm not gonna lie but it's pretty spot-on for how i imagine her.