Corey from Hotline Miami 2. The zebra rides a horse. Prompt is "coreyhlm", with "green jacket,orange pants" for her ingame outfit. Outside of her low-detail official art, she's been depicted with various skin tones, so use "dark-skinned female" or the like, keeping in mind nothing's baked in.
For her mask, combinations of "mask,zebra mask,covered face".