And now for something a little self-indulgent.
Fem!N0t-Slime x Fem!Incubus Guy.

N0t-Slime wouldn't change too much as a gal, I feel like regardless of gender he'd just wear the same styles except maybe as a woman he'd wear more stuff emphasizing his chest lol.

Incubus Guy is almost relatively the same except he wears a little makeup and has shorter hair. I have a little bias toward male character with long hair but the opposite is true and that I like women with short hair a lot which inspired his genderbent design.

This drawing is a little wonky but I chalk it up to me figuring stuff out on the spot like I ended up changing around a few details and now that I'm more certain on what I want I'll do better next time.

Anyway they're toxic yuri but in a way where it's toxic for everyone around except themselves.