I thought it was time to haul out my Nightstalkers Chapter (what little of it there is) and take some pics.
First, here is Captain Stone:
And the side:
Stone was originally conceived as the lead character for a story about a Space Marine chapter who were sent to guard an Adeptus Mechanicus base. In the course of the story, Stone was fitted for an experimental backpack mounted cannon, linked through the black carapace so it tracks and fires by mind impulse. I thought the idea was so cool I just had to make the model. In game terms he just has a storm bolter and a power sword, the backpack gun is just decoration.