You are a Humanoid.

You are Medium.

Your walking speed is 30 feet.

You are encased in thin metal or some other durable material. While you aren’t wearing armor, your base Armor Class is 13 + your Dexterity modifier.

You do not eat organic food; your diet consists entirely of metal. You can go twice as many days without food as a normal human before suffering the effects of starvation. You must eat at least 1 pound of metal per day before starting to suffer the normal effects of starvation.

If the mending spell is cast on you, you can spend a Hit Die, roll it, and regain a number of hit points equal to the roll plus your Constitution modifier (minimum of 1 hit point).

You have resistance to poison damage and immunity to disease, and you have advantage on saving throws against being  poisoned. You don’t need to drink or breathe.

When you take a long rest, you spend at least 6 hours in an inactive, motionless state, instead of sleeping. In this state, you appear inert, but you remain conscious.