The Refrigerator Body is a Body-Type that the Ridepod can equip to increase its defence. Its in-game description reads : "It's made out of a Refrigerator, so it's cold" The Refrigerator Body is the next step up after the Samurai Body, so it should be invented as soon as possible (you may found its idea recipe in the first Chapter but you'll only be able to make it in the Chapter 4). Compared to the Samurai Body, the Refrigerator Body provides 22 points of Armor instead of 19, but it will require the same Capacity (24) to be installed on the Ridepod.