Automaton
This is Age of Steel content.
Automatons are machines created by genius inventors to try and capture the brilliance of life in artificial form. Depending on the setting, they might be constructed of artificial flesh or they might be fully mechanical. The version here assumes that automatons can induct flesh into their body and use it to reconstruct themselves, but they are biologically not alive. They have no heartbeat and require no food, drink, air, or rest to continue going. Whether automatons have a soul could be a philosophical question within the setting, but as with all player characters they have free will and can come up with original ideas.