Be Excellent To Each Other

1 Dana Barrett
Oh noes! Dana is the gatekeeper!
Each night, they can PM me the name of one other player, and if that player is the Louis Tully (the keymaster), I'll let them know. If they keymaster and the gatekeeper find each other, they will release Mr Stay Puft, and between them they can choose one player to kill each night. Unless Dana and Louis is killed, Mr Stay Puft will continue his reign of terror.
Her win condition is Serial Killer. If Louis is killed before Mr Stay Puft is released, her win condition is GhostBusters. She may not communicate with them, however.

1 Louis Tully
Oh noes! Louis is the keymaster!
Each night, they can PM me the name of one other player, and if that player is the Dana Barrett (the gatekeeper), I'll let them know. If the keymaster and the gatekeeper find each other, they will release Mr Stay Puft, and between them they can choose one player to kill each night. Unless Dana and Louis is killed, Mr Stay Puft will continue his reign of terror.
Dana and Louis may communite via PM once they find each other.
His win condition is Serial Killer. If Dana is killed before Mr Stay Puft is released, his win condition is GhostBusters. He may not communicate with them, however.

1 Walter Peck
Oh no, you have no penis. But! You hate the GhostBusters, and would do anything to see them out of business.
Your win condition is Ghost

1 Slimer
Constantly hungry Slimer has the ability to cover people in slime and halt them in their tracks.
Each night, Slimer can PM me the name of a person to roleblock.
His win condition is Ghost

1 Vigo the Carpathian
Prince Vigo von Homburg Deutschendorf, Scourge of Carpathia, Sorrow of Moldavia is for some reason an investigator.
Each night, Vigo can PM me the name of any player, and I will tell him that players win condition. If he is captured by the GhostBusters, he can choose one name that he has investigated and he will call out, releasing that name (He can also give out all the names at any time he wishes).
His win condition is Ghost

1 Egon Spengler
Egon is a Ghostbuster. See below.

1 Ray Stanz
Ray is a Ghostbuster. See below.

1 Peter Venkman
Peter is a Ghostbuster. See below.

3 GhostBusters
Each night, the GhostBusters can use their proton packs to capture the ghost of their choosing. If they happen to target a human, this human will be killed, but the GhostBusters will go into hiding and have no night action the following night.
All of the living GhostBusters work together and can PM each other when they choose. However, being the tight-knit team they are if one is roleblocked, all three are considered to be roleblocked.
Their win condition is GhostBusters.

Ghosts
The rest of you are ghosts. I expect you all to take on a nice ghostly persona.
Your win condition is Ghost.

What actually are the win conditions?

Where the hell is Winston? This is racial discrimination, man.

WIIIINSSSSSSTOOOOOOOOOOOONN.

The Ghostbusters seem a little weak, perhaps? Or maybe the ghosts will all go possessing each other, as usually happens.

Interesting twist to have the 'mafia' be the good guys.

1 Vigo the Carpathian
Prince Vigo von Homburg Deutschendorf, Scourge of Carpathia, Sorrow of Moldavia is for some reason an investigator.
Each night, Vigo can PM me the name of any player, and I will tell him that players win condition. If he is captured by the GhostBusters, he can choose one name that he has investigated and he will call out, releasing that name (He can also give out all the names at any time he wishes).
His win condition is Ghost

Say I was playing and I was Venkman, and Gaywood was playing and he was Vigo. He investigated some people, but they were all ghosts. Then he investigated me, and found out I was a GhostBuster.
When Vigo was zapped by the GhostBusters the next night, he can choose one name to shout out. In this case, the obvious one would be "Grim... is Venkman!".

Two questions on that :

1) Does he shout it out that *everyone* hears , or does he just tell the ghostbusters
2) If they target him is he then 'dead' ? (okay I mean no longer in the game)