Sci-Fi Heroines' Pictures for Faction Leaders

[Lord Avalon]

No, you have to at LEAST have ripley from Aliens.

Just like Sarah Connor from Terminator, Ellen Ripley becomes a heroine in the second film, not a victim. 

I'd say "survivor" rather than "victim."  (Well, OK, Sarah Connor initially was a lot more "victim.")

How about Maren Jensen, Athena of the original Battlestar Galactica?  Oh, damn, OP said since the 90s.  Tricia Helfer, Number Six from nBSG.  Grace Park from same.  Claudia Christian, Cmdr Ivanova, from B5.  Eliza Dushku, Echo from Dollhouse.  Julie Benz, Stephanie Powell from No Ordinary Family.  Alessandra Torresani (Zoe Graystone) and Polly Walker (Clarice Willow) from Caprica.  Torri Higginson (Dr. Elizabeth Weir) and Rachel Lutrell (Teyla) of Stargate Atlantis.  Sean Young, Rachael from Blade Runner - well, not a heroine, but with the hairdo has an interesting look (also prior to cutoff unless you count re-releases).