You share a number of traits with other Automatons:

Ability Score Increase. Your Constitution score increases by 2.

Age. Automatons are created as adults; they have no childhood or adolescence. It is theorized that Automatons may show signs of physical deterioration after about 150-200 years, but have no further aging effects after that point and no maximum age.

Alignment. Automatons tend toward lawful alignments, as they were constructed to be built for one purpose, usually to help their creator or other sentient beings.

Size. Automatons who are gendered as "male" tend to have broader and heavier builds while "female" gendered automatons are thinner, looking more like the race they were modeled after, with more elegant facial features. Your size is Medium.

Speed. Your base walking speed is 30 feet.

Living Construct. Even though you were constructed, you are a living creature. You are immune to disease. You do not need to eat or breathe, but you can ingest food and drink if you wish.

Instead of sleeping, you enter an inactive state for 4 hours each day. You do not dream in this state; you are fully aware of your surroundings and notice approaching enemies and other events as normal.

Composite Plating. When you aren't wearing armor, your AC is 11 + your Dexterity modifier. You can use your natural armor to determine your AC if the armor you wear would leave you with a lower AC. A shield's benefits apply as normal while you use your natural armor.

Languages. You can speak, read, and write Common and your creator's native language (select one language at random if your creator is human).

Overclocking. Whenever you take lightning damage, the power surges through your mechanical parts and magical circuitry. You gain the benefits of the haste spell until the end of your next turn - that is, your speed is doubled, you get a +2 bonus to AC, you have advantage on Dexterity saving throws, and you get an additional action, which you can use to take the Attack (one weapon attack only), Dash, Disengage, Hide, or Use an Object action.

However, at the end of your turn, as the energy dissipates, the damage becomes apparent. Make a Constitution saving throw. The DC of this save is equal to 15 or half the lightning damage dealt to you earlier, whichever is higher. On a failed save, you are completely immobilized until the end of your next turn; on a success, you are still negatively affected and can't take any actions or bonus actions, though you can still move your speed as normal.

Subraces. Only three configurations for Automatons were known to have been created or altered, each quite unique in their own respect, built for different jobs.

Robust Frame

Clockwork automatons with robust frames were built to protect and serve others. They fight off foes and can physically carry the helpless out of harm's way.

Ability Score Increase. Your Strength score increases
by 1.

Evacuation Subroutine. Your frame is built for carrying people and items to safety. Your speed cannot be reduced due to being overencumbered or when lifting, carrying, or dragging another creature.

Hulking Build. You gain proficiency in your choice of either Athletics, Intimidation, or Survival.

Finesse Frame

Automatons with this frame type are agile, small, and quick on their feet. These types were primarily built for entertaining crowds with their daredevil stunts, though their speed can easily be put to other uses.

Ability Score Increase. Your Dexterity score increases
by 1.

Bounce Back. Your are designed to take a tumble. It only takes you 5 feet to stand up from being knocked prone, instead of half your movement.

Nimble and Lightweight. You gain proficiency in your choice of either Acrobatics, Sleight of Hand, or Stealth.

Mystical Frame

Using the magic inside them to their full potential, these Automatons were built to assist those that were more magically inclined, with a greater capacity for learning as well as the ability to store and use magic themselves.

Ability Score Increase. Your Intelligence score increases
by 1.

Keen Intellect. You gain proficiency in a single skill chosen from the following: Arcana, History, Investigation, Nature, or Religion.

Magical Processing. Your exposure to magical power has manifested itself in the ability to replicate parts of it with your own abilities. You learn a wizard cantrip of your choice. Intelligence is your spellcasting ability for this spell.