Working on a future development of the Sen whereby a good part of their civilization condenses into a variety of living spacecraft chassis which they use to explore different geometries of spacetime with.
Shown here is their three-dimensional shadows, they are comprised of shifting energies and forces, conjuring ghostly limbs and manipulators when needed, and slipping between states of matter at will.

Their original forms will reside still in some places, tending to the cities and planets left in preserved stasis, now museums to their story and origin.