Per the Badab Campaign rules, Commander Culln may have a Terminator Command Squad. The fancy new models in Space Hulk are a perfect fit!
In fact, the Sergeant makes a decent Culln--at least he actually has a Relic Blade and not the tiny power sword FW gave him:
It goes without saying that all the BA icons are cleaned off. They'll be replaced with skulls, eagles, etc. where appropriate.
The Command Squad Apothecary is below. He's the perfect model for this, as kneeling is a traditional pose for customized Apothecaries... and I had absolutely no need for a dude ripping up the floor:
His left arm will be a kitbash of the plastic apothecary arm.
More to come...