Below is a list of abilities and/or beings that can be in the game.  This list can be added to or modified as the GM's see the need for it.  This is a basic guideline.  If you have any questions please ask one of the GM's.  Remember when creating your own characters to keep them realistic.

Demons:  These are malevolent or evil spirits that were never human.  They can effect the world in small ways like ghosts or they can possess a human and control them for limited times.  Demons are ageless.  They can be exorcised and even banished to another dimension.  They can also be affected by religious artifacts but it is the faith or belief by the human in the artifact that gives it power.  (In other words an atheist could not use a cross to ward off a demon.  They have to believe in it).

Empaths:  Paranormal or psychic ability to sense the emotions of others.  This is not telepathy but the ability to sense what others are feeling

Fairies/Elves/Dwarfs/Giants:  These are elder races.  Although some humans may have some relation to them it would be from centuries before.  Most elder races are out of phase with our world, they are part of this world but on a different plane of existence.

Ghosts:  These are beings that were once human and have since died.  They usually stay around either a person or a place.  The longer they have been a ghost the more they are able to effect the world in limited ways such as making a room cold or moving small items.

Healers:  May be said to afford gradual relief from pain or sickness through psychic connections with people.  Cannot do miracle cures but can slow down injuries or speed up healing.

Immortals:  Immortals are about the rarest type of supernatural being out there.  You have a better chance of being turned into a Vampire or Werewolf, then of being born or cursed into Immortality.  

Two different types.
 

Born Immortals - Age at a much slower rate and can only die of decapitation or ancient age.  They are the rarest of the rare. In order for them to be born, two gene carriers have to get together, basically a one in a million chance.  They can die, but come back almost right away, just the more serious the injury the longer it takes them to come back.  Their aging slows upon their first death.

Cursed Immortals- Cursed into being by say for instance Gypsy’s, Witches, whatever.  Also age slower, just at such a slow rate that it makes it seem as if they live forever.  They heal at a faster rate so it can take more to kill them but do enough damage and they will die, but the more sever the damage the longer it'll take to heal.  Decapitation, fire, stopping the heart, are all sure ways to kill them.  Their aging slows upon the curse.

Immortal males can impregnate mortal women although they aren't as fertile as normal males. Immortal women can't get pregnant (sorry don't want to deal with periods during all of immortality). If they have children could pass on a faster rate of healing and a slower rate of aging but the child will not be immortal just a better healer over all.

Mediums/Ghost Seers:  Can see or hear ghosts.  May listen to and relate conversations with spirit voices, go into a trance and speak without knowledge of what is being said, allow a spirit to enter his or her body and speak through it, or may use some form of physical tool, such as a writing pad, to relay messages from the spirits those who wish to contact them.

Psychics:  Ability to see/visualize past, present or future events.  This can be done using tools for scrying or divination or just through tapping into psychic resonances of a place or person.  No mind reading or telepathy.

Witches/Wizards/Warlocks:  These people can cast spells or make potions to effect the world or others to some extent.  They are not all powerful.  They cannot appear/disappear at will; they cannot go forward/backwards in time, or anything like that.  For those who watch things like Charmed, BTVS, Practical Magic etc think more along the lines of Practical Magic.

Vampires:  These are beings who need blood to survive.  They do have more strength and agility then humans but they are light sensitive (Sunlight won't kill them.  It will though dehydrate them faster then a human so they prefer the nighttime over the day).  They cannot die except by fire or decapitation.  A stake through the heart paralyzes them.  They do not need to kill nor do they need to feed on humans but they do need blood to survive.  If severely wounded feeding on blood can increase their healing time.  They can eat normal food, live fairly normal lives but they do not age.  Female vampires cannot procreate however male vampires within the first decade have on rare occasion sired a child.  These children aren't quite as strong as a vampire but fairly close to where there is little difference.  They age fairly normally until their twenties were it slows down to a stop.  One becomes a vampire by being drained of almost all blood and then feed blood from a vampire. 

Werewolves:  People with the ability to shape shift into a wolf or wolf like creature after being placed under a curse.  The curse can be imposed from another (it would have to be from someone very, very powerful) or by being bitten by a werewolf while the person is in wolf form.  They can change at will during the night hours once they have control of it (approximately 10 years) , prior to that any thing might trigger the change during the night.  Werewolves have an aversion to bright lights and wolfs bane.  They are allergic to silver, in all forms.  This allergic reaction can range from being blisters from the touch on skin or to killing them if taken internally.  Can be killed by fire, decapitation or silver poisoning.  They age at a slower rate then humans but are not immortal.  They can have children but they do chance in passing on the werewolf curse.  As a human slight addition to strength and agility along with heightened sense of smell, sight and hearing.