You have to wonder whether or not, or how far, the Dollhouse naming pattern extends outside of those characters we've already seen. If they're using the NATO phonetic alphabet (which given Echo, November, Sierra, Victor, and Alpha seems to be the case), you have to wonder who they code-named Foxtrot, Charlie, Golf, Hotel, Papa, Quebec, Romeo, Uniform, Whiskey, and (hey, a name for that college student who got conscripted at the end of the University episode!) Zulu. *grin*
http://en.wikipedia.org/wiki/NATO_phonetic_alphabet