Fully compresses via TinyPNG:

-Asuna

-Blackrose

-Blake

-Buffy

-Chell

-Daisy

-Elena

-Hermione

-Jasmine

-Kim

-Kyoko

-Meg

-Revy

-Rosalina

-Ruby

-Sayla

-Videl

-Weiss

-Xander

-Yang

-Zoey

and Partially Compresses Raven and Seven of Nine.

For characters starting with K or L