You are proficient in Acrobatics and your choice of stealth or intimidation.

Their base walking speed is 30ft.

Increase Dexterity by 2 and Charisma by 1.

As a Demonborn, born of hell, you do not age.

Demonborn typically side with lawful and typically not good; as they understand law but not going out there way to help unless law dictates it.

Demonborn typically range from a height of 6'0-6'4" and weigh anywhere from 145-180. Your size is medium.

During the day your vision is normal and pupils are nonexistent, at night your eyes burn like hot coals. 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. Your vision also is based on thermal sense and can work in pitch black when tracking heat. Due to your glowing eyes at night, you are easier at being seen.

You have resistance to fire damage and acid damage. In addition, you are immune to torture (with your time in hell you've learned what pain is but nothing on the material plain comes close).

As an action you can possess any willing creature within 10ft, if the creature is unwilling they must make a DC 14 Charisma saving throw. On a success they are aware of a presence trying to possess them but not necessarily by whom; on a failure they are possessed for up to 1 hour or until their health reaches 0 (if combat ensures), upon which you are expelled from the body (health unaffected).

You can use your action to exhale hellish fire. When you use your breath weapon, each creature in the area of the exhalation must make a saving throw. The DC for this saving throw equals 8 + your Constitution modifier + your proficiency bonus. A creature takes 1d6 damage on a failed save, and half as much damage on a successful one from the immense heat. The damage increases to 2d6 at 4th level, 3d6 at 7th level, 4d6 at 11th level, and 5d6 at 15th level. After you use your breath weapon, you can’t use it again until you complete a short or long rest.

As a bonus action you can switch to a feral stance; in this stance your Dex is increased by 2 and if unarmed you can make 2 attacks per action and 1 per bonus but you are unable to make any Charisma attacks/checks and have disadvantage on charisma saves while in this stance. The stance lasts until the player uses their action to drop stance, which reverts the character to their previous stats.

As an action you can use Flash Step to move anywhere within your movement range. When you do a Flame erupts where you are, teleporting you to your destination; the flame does 1D6 fire damage, at the previous and current location, to all in melee range. No attack of opportunity when you use this trait to move. This can only be used once per long rest.

You can read, write, and speak common and infernal; as well as one language known to your summoner.

When you rest near a fire, you need only to rest for 4hrs to get the benefits of an 8hr rest.

In place of healing potions, you use ash to heal. Potions still work with a successful DC CON 12 save otherwise it only heals 50% of the rolled value.