Mostly my top pics from SNK are from Samurai Shodown like Amakura, Rera (the other personality of Nakoruru), Rimururu, Galford or Mizuki.

Of the characters from Fatal Fury I would choose Duck King, Wolfgang Krauser, the Jin brothers or Tizoc.

Of the characters from KOF I would choose K', May Lee, Nameless, Ash Crimson (yes I want to see the world burn), Shen Woo, Duo Lon, Oswald, Shion or Momoko.

Of the characters from the rest of SNK franchises I would choose Eiji Kisaragi, Moriya Minakata, Jyazu, Neo Dio or the Tank Metal Slug.