Like most Gen X/Gen Y era, my slippery slope will be instantly familiar to oldfags:
Cheetara, Maid Marian (and, plot twist, a little bit of Robin Hood), Gadget Hackwrench, Callie Briggs, Nala (that fucking look bros), Roxanne (Goofy Movie), Lola Bunny, Krystal (Star Fox), Renamon/Lucario