Teo is a rare half breed, part Tabaxi part DemonBorn, this brings a handful of benifits as well as hinderances.

Ability Score Increase:
Increase Dexterity by 2 and Charisma by 1
Age (4 D4 x 100 + 1 D10 x 10): Teo will live around 820 years and stop aging physically at age 21
Speed: Teo has a walking speed of 30ft
Languages: Teo can speak, read and write Common and Infernal

Cat's Talent:
You have proficiency in the Stealth skill.

Darkvision:
You have a cat's keen senses, especially in the dark. You can see in dim light within 30 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.

Demonic Fur:
You have resistance to fire and acid damage, you also have weakness to radiant damage. Holy items and equipment burn to the touch, trying hold or carry such items will deal radiant damage.
attacks made against Teo using such items do not deal extra damage.

Cats Claws:
Because of your claws, you have a climbing speed of 20 feet. In addition, your claws are natural weapons, which you can use to make unarmed strikes. If you hit with them, you deal slashing damage instead of the bludgeoning damage normal for an unarmed strike.

Feline Agility:
Your reflexes and agility allow you to move with a burst of speed. When you move on your turn in combat, you can double your speed until the end of the turn. Once you use this trait, you can't use it again until a short rest.

Demonic Talent:
You have proficiency in the Arcana skill.

Demon's Heritage
Any ability or status used on you that uses the allingment will treat you as Evil despite your actuall alignment.

Blood Thirst:
You must feed on blood once every 2-3 days, Feeding on life force restores health equal to half the damage a bite attack caused. Failure to feed you turn feral, attacking allies and if still not satisfied within 1 week after turning feral you will become extremely weak.
Bite damage is calculated as 1d6 + strength .Half of this total damage is restored as health.
you can store blood in viles to drink at later dates, blood only keeps for a few weeks.
1st day after 3 day threahhold You suffer disadvantaged on charisma checks
2nd-3rd days you are loosing yourself, when you start your turn in combat roll a wisdom save throw of DC 10 on a fail roll a d 12 as a compass to decide your target.
any further days you fail or refuse to drink blood you will suffer level 3 exsagust until you satisfy your thirst.

Feral Stance:
As a bonus action you can let your Primal blood take over to switch to a feral stance. This stance increases your Hit roll +1 and gives you an additional unarmed attack per turn. you are unable to make any Charisma attacks/checks and have disadvantage on charisma saves while in this stance. The stance lasts until you use a action to drop the stance, which reverts the character to their previous stats, This stance cannot be used outside of combat.

Demonic Contract
Demonic Contract Stats
DemonBorn are born, bread, live and die within the nine hells as it has been since the dawn of time, however more recently powerful DemonBorn are able to make infernal contracts with the primal deamons of the nine hells to grant access to the mortal realm.
this contract is not to be taken lightly as it is eternal and the mortal realm will never truly accept Demons, it also comes with some drianing drawbacks on ones magical abilities.
the reward however is a powerful demon as your partner for life and an unatually long life.

If a demonBorn were to be born outside of the nine hells they would have to return to the nine hells or be dragged down to the deepest parts never to be seen again. it is the duty of any parents wishing to bare children in the mortal realm to plan ahead for such a ritual or be shamed and outcasted by the nine hells.

If a Demon is killed your character looses Half thier Maximum HP and falls Unconsious.
your character can revive thier demon by performaing a Ritual (100Gold + (10gold x Character level) and 12 hours of prep) which point your max HP will return to normal and the Demon will be brought back at full health.
If your character's HP falls to 0 the Demon will disapear and they will have to perform the Ritual to bring thier demon back and restor thier maximum HP.

This Contract puts a massive strain on your character's magical abilities, they are unable to learn any 9th level spells and no 1st-8th level offensive spells, you can still learn offensive cantrips and you are able to use magical items and scrolls.