Playable rockworms

[sartorius]

The lowly rockworm, a creature of mining's ire, or a fun gimmick/ghostrole to play?

Advantages:
-Wiggle through space to find more rocks.
-Eat rocks, crap out valuable minerals.
-Eat through solid rock (like a pickaxe) to get at more delicious rock.
-Ridiculously durable. Take a beating before dying.
-Eat materials people have left lying around.
-Annoy miners by eating their rocks.
-Annoy other crewmembers by eating their pet rocks.
-Eat the scrap left behind from massive explosions.
-Wish you had a higher movement rate.
-Complete some miscreant's objective for a station mascot.

Disadvantages:
-Slow.
-Can't eat things that don't have a material type defined.
-Unsightly.
-A likely target of frustrated miners.
-Rock fixation.