Spider Demon (Mother) from Demon Slayer / Kimetsu No Yaiba
Keep in mind that settings may vary slightly between different versions. See below for more details.
When I tested this with different checkpoints and LoRAs, it seemed to work quite well.
Pony:
A LoRA weight of 0.8 works great, though you can adjust the strength as you prefer.
Prompts I usually used:
(white skin:1.5), pale skin, long hair, white hair, facial markings, green eyes, fangs, bead necklace, japanese clothes, white kimono, cleavage, pink obi