2nd Screamer Killer got based too, but not base painted yet. Had to protect the cork with some tile adhesive/grout.
Aquarium gravel [green and blue chips] is really handy here. They add an intermediate size between some of the larger sharp sand stones and my sifted material. I'm running out of my Element Games millet basing material though.
Here's two Great Big Big Build RUSTY Stamps of Approval for the build.
Psycophage is based, with a spare Genestealer node for decoration.
And lastly in this group of build/basing, the Neurotyrant and Neuroloids. I had wanted to have an afternoon and get all the nids based but this was it for now.