Ok, so these aren't official GW sculpts, however they did originate from them. These two have been modified from the original Seer Council box set, given new heads, flowing locks, female bits and a healthy dose of attitude to go with it. Also, there is a nice resculpt of the Striking Scorpion Autarch, refitted for use on a Jetbike - complete with funky canopy and flowing Roman style cape.
Beware, some folks will have you believe these are unreleased GW sculpts, or command rediculously high prices for them on eBay. Most recently someone (I won't mention names) sold these for $150 USD each - In reality they are $6USD each (Autarch $12USD), or were when more readily available. Knowing is half the battle!
Anyhoo, on to the pretty pictures :)