According to Aphrodite, the metal that encompasses their body reacts to a Mechanical Gods will, becoming either hard or soft. They are also said to have a heart, that much like a regular carbon-based lifeform causes them to die if it stops beating. Some Gods like Zeus and Aphrodite feature a cockpit structure on their bodies which feature a mechanical body that contains their consciousness, that consciousness can be transfered to a person the god personally selects to pilot their bodies and only they can do it. It is unknown if other gods have this ability, but it is possible.
Much like the Greek Gods, the Mechanical Gods are a war-like race who seek to expand their empire throughout the dimensions.
The technology of the Mechanical Gods is highly advanced compared to the technology of Earth, building large and powerful living weapons such as the Mechanical Beasts as well as methods that allow them to cross realities.