Clockworks are typically designed with a purpose in mind, enhancing a particular ability over others. Bodyguard clockworks may have enhanced strength, while a musician may have increased charisma.
Pick one ability score of your choice to increase by 2.

Replacement Option: Modern Major Modron

Rather than excelling in one particular area, you are a well rounded clockwork.
Increase two ability scores of your choice by one.
Replaces: Purpose Built

Clockworks do not physically mature, but they quickly mentally mature with life experience. Clockworks may be anywhere from a few days to a few hundred years old. The life span of a clockwork is indefinite. However, they may die due to injury, malfunction, lack of maintenance, or core corruption. 

Born of Mechanus, clockworks tend towards lawful alignments. Many see issues as binary: good and evil, black and white. However, the nature of their inventor, past life, or corruption may cause clockworks to become more chaotic in nature.

Clockworks stand anywhere between 4 and 7 feet tall. Your weight depends on your construction, but typically clockworks are usually heavier than their humanoid counterparts. Your size is Medium.

Your base walking speed is 30 feet.

Advanced sensors allow you to see in less than ideal conditions. You can see in dim light within 60 feet of you as if it were bright light, and in darkness as if it were dim light. You can’t discern color in darkness, only shades of gray.

Replacement Option: Highly Skilled

Instead of darkvision, you may choose proficiency in one skill of your choice.
Replaces: Darkvision

Due to your mechanical nature, you have the following benefits:

Inner Machinations:

• Your creature type is Construct instead of Humanoid.
• You have advantage on saving throws against being poisoned, and you have resistance to poison damage.
• You are immune to disease.
• You don’t need to eat, drink, or breathe. However, you may do so if you wish and your constructed body allows it.
• You don't need to sleep, and magic can't put you to sleep. Instead, when you take a long rest, you need to spend at least 4 hours in rest mode. In this mode, you appear inert, but it does not render you unconscious, you can see and hear as normal.

Optional:

• Irritable Gear Syndrome: Due to your construction, you cannot eat or drink normal foods. Consuming anything other than water and oil will cause your gears to malfunction. 

Your heart is a core of glowing blue arcane fluid where your soul resides. If you were created, this appears as a glass like sphere. If you were once another creature type, your heart remains the same shape as your former creature type. 

Due to your mechanical nature, magical healing is halved when applied to you. Magic that does not effect constructs has no effect on you.

• Mending: You touch a living construct that has 0 hit points. The construct becomes stable.
• A creature can use their action to do emergency maintenance on an unconscious construct and attempt to stabilize it, which requires a successful DC 10 check made with tinker's tools or your games tech ability (ex., arcana).
• The efficacy of Wisdom (Medicine) checks is up to the discretion of your DM.
• You have learned how to maintain your constructed body, gaining the ability to cast Mind of the Maker once at level 1 with this trait and regain the ability to do so when you finish a long rest.

Mind of the Maker

A construct you touch regains a number of hit points equal to 1d8 + your spellcasting ability modifier. This spell has no effect on undead or humanoids.
At Higher Levels. When you cast this spell using a spell slot of 2nd level or higher, the healing increases by 1d8 for each slot level above 1st.