SNK Playmore has set up a section on their website on Dot Graphics, which KOF XII’s graphics are based on: http://kofaniv.snkplaymore.co.jp/info/15th_anniv/2d_dot/index.php
Navigate around the site and you will come across the characters’ dot graphics gallery, where you can zoom into their sprites for better visualisation.
For a good translation/summary of what the site is offering, check out this blog.
Pretty trick.