Kelly Marlene Taylor, portrayed by Jennie Garth, is the lead female character of Beverly Hills, 90210 for the majority of the show's duration. Initially presented as a "spoiled teen vixen", the role was gradually expanded by producers. Subsequently, Kelly became instrumental in launching the first spin-off, was written with a more compassionate demeanor, overcame several perils and personal challenges, and attracted many romantic suitors and triangles. Appearing for the entirety of the series' run, the character is noted for her development from youth to adulthood.

Naomi Clark, played by AnnaLynne McCord, is a fictional character from the CW primetime drama 90210, the fourth series of the Beverly Hills, 90210 franchise. The character was created by Rob Thomas, Gabe Sachs and Jeff Judah, with later developments by Rebecca Sinclair, and occasional input from McCord.