Many thanks, chaps!
Legionnaire Bert: oddly enough, I have a couple of beastmen under the knife at the moment.
Here's an "ash gremlin". I have five of these almost done. They'll act either as primitive "wandering monsters" who can emerge from a number of connected burrows under the gaming table to swarm isolated, or as add-ons to a player warband (bribed with sugar, which they crave with a chemical zeal). We'll use the ASoBH Gang trait, which allows up to five of them to activate as one, along with the Gregarious trait. I'm planning a slightly higher-tech leader with a scavenged gun.