Steven Universe(s) EDIT: The big one is Stevonnie, which I should have realized at the time!
Harley Quinn. There were dozens of Harleys. I'm sharing this one because its a good example of classic Harley, and because she also did the voice!
Recent cover scans I added to GCD:
Arborcides Mini-Comic #10
DNR book 3 - Too Long in the Wasteland
My Gal, the Zombie: Everyone Loves a Green Skinned Girl
Quick, the Clockwork Knight #2