'Doctore' is what they call Castor's apothecary. He's not a Word Bearer at all (he is a convert to the Word, if not as fanatical as born-and-bread Word Bearers). He's something of a magician when it comes to Astartes anatomy - and the mysteries of the gene-seed. His work has been greatly enhanced by access to the nice medicae suite aboard the captured Tigers Argent strike cruiser....and the larger (but rougher) facilities aboard the battle barge.

Kuger is a Magos in service with Uriel. His specialties run towards cloning, vat-growing and servitor-making. It is largely thanks to his work that the Angyr Angst is run by such a crew of fine vat-grown clone specimens and well-groomed servitors. Kuger hates mutation and deviance as much as your average anal Imperial servant, but he's not as afraid of creating abominations - he just terminates them with great zeal if or when they do crop up.

The two of them have also joined forces on occasion; their most elaborate project to date has been working on accelerating the creation process for new Marines. Using cloned gene-seed and various experimental techniques they've managed to turn Aspirants into Marine Scouts in just a few months (though it looks like about six months is the limit if they play it 'safe'). The normal recommended minimum is two years (but most 'Loyalist' Chapters use 4-6 years). So far one batch of 200 Word Bearer Scouts have rolled of the assembly lines - plus another 50 Iron Warriors. It remains to be seen if gene-seed removed from this new breed of Marines will be viable for further cloning.