Third generation Daemonettes! Juan Diaz really captured their unearthly grace in a way unseen before or since; and the sculpts are highly sought after (as evidenced by their 2016 rerelease via the Made-To-Order program).
Diaz also produced a set of Seekers; with the riders sculpted in a similar style (and one, memorably, perched as if preparing to launch herself at an enemy, daggers first)!
I have a set of my own that I desperately need to paint up (if and when I can actually decide on an appropriate color scheme)…
My FLGS had gotten a troupe of some oldhammer daemonettes, and I just couldn't resist that temptation.
Holy crap these models look good for being made in 2001.