This model, from a Games Day diorama, looks like a fanatical crazed man who might be useful as a...tracker of some sort? Still thinking here, but he's got a lot of character. I've gotten the comment that he may be too recognizable, but I'm sure with new arms and weapons he'll be a good fit.
Next:
The once famous Captain Imperium, wielding a powerfist and shield. I'm thinking a Rogue Trader of some sort for this guy, but his wargear gives off a much more offensive look than a rich trader looking to better his interests by the sword. Maybe he'll be a young Inquisitor...
That's all for now, hope it was enjoyable.
Drew ~ED Wargaming~