Velma Dinkley - well-versed in superstition, myths and legend, Velma generally has the mystery solved before any one else.
I decided to use a DC Direct Smallville Lana Lang figure because the size was perfect and I wanted to keep some group cohesion by using two figures from the same line for Freddie and Velma and for Daphne and Shaggy. First, I removed the long hair from the figure and sculpted her hair with sculpey. I removed her cheerleader skirt and replaced it with a DST Buffybot skirt as well as replacing her feet with Buffybot's feet. I then sculpted her sweater and socks. Her glasses were taken from a McFarlane Austin Powers figure.
One big lesson I learned with this figure is that while paint adheres to hard plastic pretty well it doesn't to pliable rubber (the skirt). I let the skirt dry after I painted it but it came off everytime I touched the figure. Several coats of Testors flat lacquer spray helped with that problem.