Your dexterity or Intelligence score increases by 2 and your Charisma score increases by 1.

Chiropterans grow to be bigger than a teenage human within 5 years and by 12 are full grown adults. Due to them being a newly bred race, it is unknown exactly how long they can live for but simic scientists believe their makeup and build could allow them to live for thousands of years if not run for eternity with a ample supply of blood.

Chiropterans only want to feed and be left alone but when they must interact with others, the majority harbor hatred for those who think of them only as beats to be slain and keep a strong Lawful Evil alignment. Small amounts of chiropteran have recently become accepted in parts of society and have started to align themselves with a more neutral or lawful good alignment. 

Chiropteran tend to be very lean and muscular, standing on average at 7 feet tall and weighing anywhere from 130 to 210lbs. Your size is Medium.

Chiropterans are not really adapted for quick bursts on land, they are more attuned to aerial maneuvers. Thus their walking speed is one of the slowest at 15. 

Created from the only mammal capable of true flight, Chiropterans are tremendously great fliers granting them a flight speed on 45.

Chiropterans large claws allow easy purchase when climbing, granting them a climbing speed of 20. 

The claws and fangs of chiropterans are their only means of protection, their hands aren't developed to hold a weapon, they require a modified armblade if they are to use a weapon at all. Their hide being as fierce as the weapons they are born with. Granting them increased durability based on Dexterity modifier, and aids in their ability to hide in the dark. 
A chiropterans Claws deal 1d8 slashing damage. A chiropterans Fangs deal 2d6 piercing damage. 
If the chiropteran has an opponent grappled, the chiropteran will have advantage on their Fangs. If either of these attacks are Critical, it causes bleeding on all living enemies.(Undead/Constructs/Elementals immune)

Once a Chiropteran reaches 4th level their Fangs and Claws become powerful enough to take down targets with resistance to nonmagical attacks. 

You have a prehensile tail, which you can use as a third limb to use at your leisure. With this tail you can:

• Draw or stow an object weighing up to 1 pound with your tail. If doing this while stealing, you gain advantage on your Sleight of Hand check.
• Open and close doors.
• Use thieves tools.
• Gain advantage on Grapple checks.
• Give the Help action to a friendly creature within 5 feat. 
• Can be used while resting, allowing your forelimbs to envelop your body, granting advantage on stealth rolls against those without Darkvision

Being of the chiroptera bloodline your hearing and sight is impeccable. 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.

You can read, write, and speak Common and one other language of your choice.

Your large ears grant you proficeny on Perception checks when using your ears. You also gain advantage on your Perception checks while ease dropping. 

Chiropterans have had to hide their presence from society in order to survive and co-exist. They discovered early on that to trade they needed to hide their appearance and learn to communicate. 

They learned early on, that the voices in their heads weren't those of demons or spectres. They could occasionally hear the thoughts of those that threatened them. Akin to this power was the ability to speak through the mind, but only in languages they have learned. And the dormant magic leftover from creation, was just enough to shroud their beastly characteristics, and turn them smooth and more appealing.