What's going to happen to you in Hell if you break the seven deadly sins?
The original offences and their punishments. These will continue forever as God in his mercy decrees:
Pride - Broken on the wheel
Envy - Put in freezing water
Gluttony - Forced to eat rats, toads, and snakes
Lust - Smothered in fire and brimstone
Anger - Dismembered alive
Greed - Put in cauldrons of boiling oil
Sloth - Thrown in snake pits
Source: The Picture Book of Devils, Demons and Witchcraft by Ernst and Johanna Lehner
Amazingly enough, the Universe was populated with all sorts of Demons and Angels long before man was around. Who created all these characters is one of life's little mysteries. God didn't create his own enemies - this just wouldn't make any sense, even to those who believe God created everything.
Angels
Based on the writings of Paul,
(as well as Ephesians 1:21, Colossians 1:16), religious scholars around 300 AD determined that the following angels existed:
First Hierarchy
Seraphim
Cherubim
Thrones
Second Hierarchy
Dominions
Principalities
Powers
Third Hierarchy
Virtues
Archangels
Angels
The Devil: Lucifer
You can't have good guys in any story without some bad guys to make it interesting. In a stroke of brilliant imagination, Father Sebastion Michaelis, in 1612, described a bunch of devils and their corresponding sins.
First Hierarchy
Asmodeus - avarice
Astaroth - laziness
Balberith - murder
Beelzebub - pride
Gressil - disease
Leviathan - blasphemy
Sonneillon - hatred
Verrine - impatience
Second Hierarchy
Carnivean - obscenity
Carreau - cruelty
Oeillet - greed
Rosier - lasciviousness
Verrier - disobedience
Third Hierarchy
Belais - arrogance
Iuvart - sins not covered by other devils
Olivier - parsimony
In order to completely intimidate ignorant farmers and little children, Friar Franceso Mario Buazzo, in 1608, came up with some demons who worked as servants to the devils.
Fire Demons - these guys live in the air and get to boss around the other devils.
Aerial Demons - hover around human beings.
Terrestrial Demons - terrorize the inhabitants of forests and fields.
Aqueous Demons - live in water, so be careful of what you drink.
Subterranean Demons - live in caves like trolls.
Heliophobic Demons - only come out at night.
So boys and girls, the universe must have been awfully crowded before god decided to invent humans to play around with.