You are born able to speak in Deep Speech naturally, you learned Common later in life.

When first born, this race starts out as a monster with the ability to adapt quickly, most are killed in monster form but the few that survive around 6 months can gain enough sentience to decide to become humanoid. These ones then adapt further, learning to speak and gaining the intelligence of a teenage human after 1 year, and they are fully mature humanoids around the age of 2-3years old, able to look just like a regular human, causing their fast learning ability to halt. This is sadly rare because, in their original hideous state, they barely make it to this age, due to either starving to death or being killed off. 

At around the age of 2 years old, they are able to start learning magic but rarely do. They can live almost forever as long as they eat a certain amount of raw meat to sustain themselves. The oldest of this race anybody has seen was unfortunately only 9 years old, living only 6 years as a fully grown adult before being killed when found out about his true nature.

Medium height (depending)

The flesh loses its height when faced with starvation, they require a certain amount of raw meat in order to maintain a specific height, the taller they are the more meat they are required to eat, and the shorter the less meat they are required to eat.

They are usually around 4-7ft tall and shift between those heights if they lose or absorb raw flesh, meaning they can be incredibly large or incredibly small if they had enough meat. The ones that want to remain unnoticed have to eat a strict amount of meat every day in order to stay the same height and keep up appearances, either that or make themselves look heavier instead.

CAUTION. Other than when using magic spells, if your character eats enough meat to exceed the total size of a 10ft cube in base human form, they will resort back to their animal-like state and cannot be controlled by the player until their body is cut down to normal humanoid size and knocked out/put to sleep.

An average-sized flesh is around 250pounds of almost pure meat, muscle, and bones.

Any alignment, usually neutral.

At any age, these flesh beings' instincts are to adapt and survive. At a mature age, they often live with other humans, keeping their identities hidden usually as they are not afraid to kill to keep it a secret. They hate any threat against their lives, be careful when messing with them.

However, if they meet an understanding individual or even a whole town of people, the flesh are just happy to be accepted. They live normal human lives, make friends and allies whenever they can, and love a good slab of raw meat. How creepy and cute is that?

Your walking speed is 30ft and your flying speed is 50ft when growing wings

The flesh can only and has to eat raw fresh meat to survive.

5lbs of meat is required to sustain one foot of height per day, meaning if you are 5ft tall you must eat 25lbs of raw meat per day (30lbs for 6ft, 20lbs for 4ft, 15lbs for 3ft, and so on). You can eat any kind of raw fresh meat, such as small animals like birds, fish, mice, or even larger animals/humanoids, as long as they are made of fresh meat.

When you eat enough fresh meat for your height you gain 1d6+5 hit points either as health or as additional health for one hour, this only stacks if you eat double the required amount per stack of health gained. You can eat 10lbs as an action or bonus action during battle.

If you do not eat enough meat to sustain yourself, at the end of 48 hours your body will begin to digest itself, and you will grow a foot smaller per day until you die or eat meat again. At which point to gain your height back you must eat 30lbs of raw meat to gain an extra foot of height, which can be done at any time to gain an extra foot of height (or width) normally as well.

(You can be strategic about this, for example, if you are 6ft tall and you only have 25lbs of raw meat, you can wait one day to shrink to 5ft tall and then eat the 25lbs of meat to sustain yourself another day.)

Tough life for the flesh.

As a humanoid flesh creature, you can manipulate your body to change shape into a number of different forms.

- As an action or bonus action, you can form one flesh/bone knife or sword with your hand, the flesh/bone blades can be anywhere up to half your height in length. You can use an action to attack with these, add your DEX modifier to hit, and you deal 1d6+3 piercing damage. You can create one of these per hand and remain in this shape until you use another action or bonus action to turn one back to normal.

- You no longer require most non-magic toolkits as you can simply create the basic tools for yourself (1 action or bonus action). You become proficient in sleight of hand.

- As an action, you can unhinge your jaw to bite an opponent, dealing piercing damage of 1d8+ your STR modifier. This counts as an unarmed strike, if your opponent is made of meat and isn't undead, you rip a small amount of flesh off them and gain 1d4 of health.

- Unless wet, you are unable to be restrained or grappled, you easily slip out. If you are restrained or grappled by anything outside your turn you can use a reaction to break free, make a DEX or STR saving throw (your choice), and beat double their proficiency bonus. Alternatively, you can wait and use an action or bonus action to break free requiring no rolls to do so.

- As a bonus action, you can create or absorb one detachable rope of flesh that is twice your height, requiring you to sacrifice one limb to create until you absorb it again. This can be done up to 4 times with each limb, taking half your total movement speed per leg. If the rope is not attached to you and is set on fire, it burns to a crisp, requiring you to eat 10lbs of fresh meat per limb to regenerate (this does not add to your total of 20lbs required to recharge flesh form).

-  As an action, you can change from your human form to your fleshy beast-like form, unlocking certain abilities but also causing you to be vulnerable to fire. It lasts up to a total of an hour per long rest, and you must eat 20lbs of meat or have a long rest to charge it fully again. When your flesh form runs out so do all the bonuses listed below.

- When in your flesh form, all melee attacks have a +2 to hit and damage rolls.

- When in your flesh form you can force yourself to sleep for 4 hours, this counts as a long rest, however, if you are awoken before the end of the 4 hours you lose all the following abilities until you have a regular short/long rest.

- When in your flesh form, as a bonus action, you can stretch your body to reach up to three times your height in any direction, add the length of your weapon to make an attack, or just interact with an item. Doing so will give an opportunity attack to anyone within 5ft of where you were standing originally. 

- When in your flesh form, as an action, you can easily slip in and out of anything wider than 1inch in diameter, however, if you want to slip through that ominous crack in the wall, any items too large, including your clothes, will be left behind. Any items permanently attached to you via a curse that are thicker than 1inch will stop you from taking this action.

- When in your flesh form, as a bonus action or as a reaction when attacked, you can choose to cover your body from head to toe in skeletal armor, adding +3 to your base armor class for up to 20 minutes. You can use this once per short or long rest.

- When in your flesh form, as an action, you can create wings in order to fly for 10 minutes. Your flight speed is 50ft, or 30ft while wearing medium/heavy armor. You can do this once per flesh form recharge.

Thanks to your ability to adapt and learn quickly you gain extra intelligence and wisdom score points.

+1 Intelligence +2 Wisdom

Any part of your body that has been covered in water will be stuck in the form it was when it had been wet until it is dried, an attempt to morph while still wet will require a CON save of 18 or higher for every turn until dry. You can still move, but your walk and flying speed is halved if your wings or legs get wet.

For example, if you are in human form and you get wet, you will remain looking like a human until you are dry, any weapons or extended limbs will remain extended until dry also. This allows you to be restrained if constantly wet.

Drying occurs when near fire for 15minutes, using a towel or cloth for 5minutes, or simply waiting to dry naturally for 60minutes.

You roll disadvantage on every STR and DEX-based roll until dry.

You have grown resistant to all poisons and diseases. You take half damage or half the effect when hurt by poison, and you gain an advantage to saving throws against poison or diseases.

- If you have been poisoned, as a bonus action you can force the poison into tiny glands hidden throughout different parts of your body, adding 1d8 of poison damage to any physical attacks you make until you are no longer poisoned.

-Any creature that bites you while you are storing poison in your glands has a chance to be poisoned with the same stats as the poison you are storing.

You take double damage to fire, but only when in your flesh form.