SSE:E Art 02: Void Generator

Originally designed as a minelayer for the Advent, the Scylla was an orbital stucture meant to turn a gravity well into a death zone for enemy ships, by continuously generating pockets of unstable matter. The designers instead decided to make it into a siege engine by downscaling it to a Cruiser displacement, and didn't bother with the large black sphere of doom. A shame, it would've looked fearsome.

The design is, of course, a shout out to the original T-Mat