This tool is based on the work of user Arachobia on RPG Crossing with his permission. He had taken a list of tables from Dragon magazine #422 in an article called "Building Character" by Matt Sernett and updated them for 5th edition. I've turned them into an automatic tool for generating a characters background.

Instructions: Refresh the page to generate a new background story. As always, you can use it however you like and fill in your own details. Your age and acquired proficiencies are listed at the bottom and are based on the results you got. Try to pick a Race/Class/Background combo that fulfills all the proficiencies. Your age may also result in ability score modifiers that can be applied after building your character.

...or ignore everything and do whatever you want. Whatever.
Background Generator

(T.101): One of your parents was a great villain. Roll on Table 5 to determine what kind of villain they were.

    >>>> (T.5): A cult leader.
Biological Parents:

    >>>> (T.101): If this is your 1st roll on this table you were adopted. Roll on this table another maximum of two times* as if it is your first and 2nd roll, for your biological parents, then again maximum of 2 times* (again as if it is your 1st and 2nd roll). After this, you may move on to Table 2.

    >>>> (T.102): One of your parents was a craftsperson or skill artist.
Adoptive Parents:

    >>>> (T.101): One of your parents was a diplomat. You will have proficiency in Persuasion.

    >>>> (T.102): If this is your 2nd (or higher) roll on this table, you were separated from your siblings as a child. Continue on to Table 2 to determine these siblings, re-rolling if you roll a 1, 2 or 20.

(T.2): A younger brother.

Choose one...
(T.3): A villain destroyed your home. Roll on Table 5 to determine the villain responsible. You start adventuring now, just after having your home destroyed.
(T.3): A villain destroyed your home. Roll on table 5 to determine the villain responsible. Roll on Table 9 if you want to have already tried to take revenge.

    >>>> (T.5): A mind flayer.

Choose one...
(T.9): You are thoroughly defeated, but you escape. You started adventuring at this point.
(T.9): You are thoroughly defeated, but you escape, swearing vengeance (again?). You can re-roll on this table to try at least one more time.

(T.9): You become trapped with your enemy. Now, former foes must work together to survive! Roll on Table 31 to see how you in particular fare from this arrangement, then roll on Table 8 to see where you eventually ended up after enduring your ordeal and parting ways with your possibly former enemy (or they ran away once they no longer needed you).

    >>>> (T.31): You barely make it. The experience leaves its scars, both physical and mental, but you find ways to compensate.

(T.8): A friend's home. They are conspicuous by there absence. You begin searching for them on Table 11.

(T.11): You find what you are looking for. You will have proficiency in Investigation. Roll on the associated table depending on what you were looking for: Person - Table 12.

(T.12): The person is kidnapped by a villain. Roll on Table 5 to see what kind of villain. They demand a magical or rare item in exchange. Search for it on Table 11.

    >>>> (T.5): A warlord.

(T.11): In your search, you turn up the activities of a villain. Roll on Table 5 to determine which villain. Then try escape their wrath on Table 19.

    >>>> (T.5): A doppelganger.

(T.19): You spy your pursuers long before they see you, and cunningly arrange for them to run into some of their own enemies. They won't be bothering you again. You gain a reputation for sharp eyes and a sharp wit: you will begin with proficiency in Perception and Deception. Your life of adventure begins.


Total Rolls: 19
Your age is ADULT
Adults are at the most equalized stage of development. From here their physical body will begin to weaken while their minds and personalities benefit from experience.
Adults have no modifiers to their attributes.

Proficiencies:
Persuasion
Investigation
Perception
Deception