Black Widow from Marvel Rivals
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:
red hair, side swept hair, asymmetrical hair, blue eyes, black bodysuit, multicolored bodysuit, headset, red lips, black gloves