+2 Wisdom, +2 Constitution: You are a walking corpse, humans are untrusting; You have disadvantage on persuasion, deception and performance, but advantage on intimidation against humans.(You have to add the +2's manually)

Ghoul bodies have been changed by the radiation, their internal systems degrading causing their bodies to be less affected by damage. Despite their weakened social skills, arising from the prejudice surrounding Feral Ghouls and their gruesome looks, Ghouls tend to be wiser and more cautious than their short-lived Human cousins.

Ghouls have a longer lifespan thanks to their altered DNA from the radiation. They live upwards of 500 years.

If they are sentient they usually follow whatever alignment they were when they were human.

Ghouls vary widely in height and build, from barely 5 feet to well over 6 feet tall. Your size is Medium.

Your base walking speed is 30 feet.

In addition to being able to see in normal light, 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.

Your creature type is undead. You have advantage on Constitution saving throws against exhaustion. You don't need to eat, drink or sleep. You can still benefit from healing.

Ghouls are immune to radiation damage up to 20, and resistant to anything above.

3 times per day, a Ghoul may draw upon the background radiation to heal their body for a number of HP equal to their lvl + Con modifier.

Ghouls are sterile and cannot reproduce

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