Well, as long as he had nothing else to do, Lucius supposed he ought to respond to the only conscious entity in the room who it made sense to talk to. O, the mild relief of meeting a fellow Marine, at long last... Xepherial would count for that purpose, and the red-armoured being, but the former was out cold, and the latter was... mad. Too far gone- to Chaos?- to consider a conversational partner, much less a reliable ally, though those were few and far between anyway. (And on that note, would he consider Ga'duk an ally? If he bled out from that wound on his side, definitely not, but he appeared to be holding his blood in for now, so whatever worked for the moronic giant.)

Then again, he was wounded, and not in a particularly friendly mood right now... 'And pray tell, Child of the Emperor,' Lucius muttered in the man's general direction, 'who are you to tell me what is and is not good or bad for me?' A subtle request, albeit somewhat impolitely framed, for an actual designation. He ought to at least know who had let them into this strange room... and how he knew the keycode to get in. 'How would you know what this room is for, or what resides within these tubes? And on that note, since you seem to be familiar with the substance, [i]what is it?[/i] What does it [i]do,[/i] why is it [i]here?[/i] Moreover...' Lucius looked around the place, staring into the darkness as he came to a possible... realisation? Or just a false alarm? Either way...

'Did you lock us into a dead end?' he asked, turning back to the purple-armoured man. 'Because I'll have you know, that makes our position no better than before, despite the layer of armour between us and the xenos.'