Here's my idea: the Demon Princes are sons to Overlords who rule over certain domains of the underworld:

-UR-JUBAAL, Demon Overlord of Madness. Reigns over the unbalanced, infuriated and unpredictable mind that is ruled by Chaos. A visionary and a fool, a prophet and a trickster.

-UR-TRAGGAL, Demon Overlord of Pain. Tormentor and victim, a channel for the constant searing agony suffered by both worlds. Enlightened and wise spirit.

-UR-VOMOCH, Demon Overlord of Voracity. Represents the insatiable appetite of Chaos; the uncontrollable need to move, to seek, to consume. Infinite greed or wanton lust are his domains, but also fiercely protective of that which is his.

-UR-AAZHEEL, Demon Overlord of Proliferation. The aspect of Chaos that represents uncontrolled growth and mutation; the force of creation but without system; order or structure. A kind father to his offspring.

-UR-KHRAG, Demon Overlord of Destruction. Representing the most obvious form of Chaos, he is the embodiment of one of its greatest powers: Entropy. The Demon Princes of Destruction generally lead the infernal legions to battle. They are honorable and strong warriors.

-UR-HEKAL, Demon Overlord of Hate. He is the patron of the wronged and the avenging ones, and has endless enmity against the universe and even his own creations. He reigns over impulsive fiery rage and cold, calculated hatred. The most “subtle” of the Demon Overlords, he governs the capital city which is named after him.

How can a female happen to fall in love with one of them?

They all have positive qualities to them.

If I counted correctly there are 6 overlords so there will be 6 females. The overlords will have to go to high school to find there true love. Should there be certain qualities that they are looking for in a female? Which would lead to making a quality list for each female. Or should I allow the females be what they want to be?

Who would the king of demons be?

well this does sound interesting but why not use a bit of the Pandora's box idea to it?
Maybe their true powers are locked away or maybe they are fighting over that one thing, like for instance inheriting the throne for example.
(Sorry if I'm butting in.)

No you are not butting in. I want a variety of ideas so that I can make an exceptional RP.

PS- I am working on dinner too so give me time to respond, please.

It'll be a little late for dinner where I am ;), but take your time.

Any more ideas? Comments? Votes yes or no? Or shall I start the planning stage?

How many people can make a character out of a given set of traits/characteristics? Such as I give you 3 traits/characteristics and you can add 2 more.

Who would the king of demons be?

The demonlord Laharl

:P

@UnlosingRanger

That I do not yet know. Are you applying for the job?

Oh, I didn't know anyone was applying. You just seemed to want ideas.
A sassy childish upperworld person with some power just seems proper is all in what you're attempting.

LOL. I was teasing you a bit is all. I appreciate the ideas from everyone but I have figured out an interesting twist to a story of five demon princes. I hope that you and everyone else will stay for the revealing of my introduction! And thanks to all of the suggestions from everyone.

Not sure if I can join yet, but I am a bit curious. Mind if I keep an eye on this?

Sure! You may comment on it as well.