SNK vs Capcom game; poof! EC's of Mai at 0:50 and Chun-li at 3:50. None of the other female tfs are very good with poor Shiki being turned into a really ugly monster for some reason.
Chun-li becomes a Chinese vampire, second pic at the bottom of this post.
Megaman, the old American series, woman into vampire at 3:50 :
And something from Panty and Stocking, has spoiler tag on so hopefully there's something to it :