this is a model of a character from a cartoon show called mission odyssey. this is trained on illustration, it could be used on Illustrious-XL and WAI-NSFW-illustrious-SDXL

if you want her human form then use this prompt: Mira_the_siren, golden hair, ponytail, grey eyes, medium breasts, eyelashes, smile, long hair, voluminous, shoulder-length bob with wide, defined waves, standing on the beach, yellow starfish necklace, medium breasts, blond eyelashes, blond eyebrows, cartoon, ????, seductive, sleepy eyes, full body visible, pink ???????, legs visible, front view.

to use her mermaid form i recommend using this prompt: Mira_the_siren, mermaid, golden hair, ponytail, grey eyes, medium breasts, eyelashes, smile, long hair, voluminous, shoulder-length bob with wide, defined waves, Her fish tail is a dark, muted green-grey color and ends in a single, long, almost feather or arrow-like tail fin, yellow starfish necklace, a cream top bra, medium breasts, blond eyelashes, blond eyebrows, navel cartoon, underwater, coral reef, full body.

have fun and good luck with making images