Nephelam
Nephelam are the children of fallen angels and demons or devils come together. Sometimes angels that have fallen from their deity turn to a live of evil and live withing the Nine Hells and cohort with demons, even developing relationships and offspring. On rare occasions the angel may still hold to its codes of honor and righteousness but the demon is cast from hell and they lean more towards a humble life. Whatever the life style they can bare children that usually follow in the manner of their parents. However they are just as much outcasts as their parents, shunned to both the celestial and demonic communities, likewise they are feared and mistrusted by most races within the material plane. They can easily take on any profession that any other race can, however due to the complications with society they usually live out in solidute as monks, or take on jobs as a rogue. Those who have inherited more magical qualities may seek out to increase their powers as sorcerer, while some who are lucky enough to find a home might enlist in a military as a fighter. In the end Nephelam are few and far between as they are extremely rare.
Nephelam Traits
Ability Score Increase: Based on your parentage you will increased attributes. You can choose to gain +2 to Charisma and +1 to Dexterity or +2 to Dexterity and +1 to Charisma.
Age: Nephelam in their youth age like humans and mature by the age of 18. However due to their heritage they can live for up to 1500 years.
Alignment: As they are born of a demon and a fallen angel they tend to usually be evil but can be any alignment based on how their angelic parent may still hold to their old codes and honors.
Size: Nephelam are usually of average height to being taller then humans. Ranging from 5'6" to 7' tall and weighing any where from 125lb to 280lb. Your size is medium.
Speed: Your walking speed is 30 feet
Darkvision: You have 60 feet of darkvision as you have inherited part of your parents celestial and demonic visions.
Extraplanar Transformation: As both your parents likely had the ability to shape change into anything they wanted you have likewise been given a similar ability albiet not as potent or free willed as that of your parents. You can cast the spell Alterself as an action and hold your new form for up to an hour without the need to concentrate. However you can only use this ability once between long rests.
Extraplanar Proficiencies: Due to the incredible ability angels could use to see through a persons soul and a demons ability to manipulate mortals the Nephelam gain proficiency with both Insight and Persuasion.
Languages: You can speak, read, and write common, celestial, and the choice of Infernal or Abyssal depending on the demonic parent.