A cramped crew flat welded to the engine car — bed, table, a very long ManTauR toilet, and Earth heavy-metal posters.
The Vermillion Line engine is not just a cab but an entire car with living quarters attached, built for a ManTauR engineer. Inside is a bed, a table, a long, thin toilet designed for a creature shaped nothing like a human, and walls covered in heavy metal posters from Earth — one more small proof that the Iron Tangle's NPC workforce has been fitted out with an imported, borrowed life.
It serves three purposes in a single hour. Silfa flees into it mid-battle rather than heal, then hides in it behind a concealment effect until Princess Donut catches her dot blinking. Carl loots everything in it that is not bolted down. And then he puts Katia Grim in it to rest for half an hour, because it is the only room on the train where a person can sit down without being knee-deep in blood.
A cramped flat with a bed, a table, a long narrow toilet built for a ManTauR, and Earth heavy-metal posters papering the walls.
The engine car's crew quarters — Silfa's hiding place, Carl's looting ground, and the only place Katia can rest.