My Ocs I remember from role playing with @okame-art , they are 2 level higher than Epath in species. They are called ‘Revasorn inventor technology’. Unlike Epath and his builder, Revasorn are a mechanical that consists Brain similar to human which mean they do have 'emotions’ and 'unlimited memory storage’. They also need oxygen to breath unlike Epath that need oxygen to combust the fuel and conduct heat. They are very heavy and fragile, they can not go near earth as the gravity will cause their weight to crush their leg.
There are two type of them.
Anchor: Consist of glass(outside) and fabric(inside and outer joint) Hold anchor shape wrench.
Aileron: Consist of copper(most part) and gallium(outer joint) Hold gaint flat screwdriver.