^ It's a work in progress! But...
Roleblocker: Everynight he/she chooses one player per night to block from performing his or her night choice. The target's night choice will not be performed, and the target may or may not be informed he was blocked. If a Mafia is blocked, there's no kill that night. Roleblocker has to choose different people! One person.
Mason: Masons are a group, usually all on the Pro-Town side, that know each other to be innocent. They can communicate with each other at Night, if they choose, but otherwise usually have no special abilities. The Masons cannot reveal that they are Masons to the town through roleclaiming. Instead, they must find other ways to defend each other. (Not sure about this one) at least 2 people.
Arsonist:An arsonist is a Serial Killer that kills with fire, and sometimes has a 50% chance of success. One Person.
Firefighter: A firefighter is a role that only appears in games with an Arsonist. Every night, the firefighter chooses someone to protect, like a doctor. However, the firefighter can only protect people from the arsonist. If the arsonist is killed, the Firefighter becomes an ordinary townie. One Person.
Whatcha think? I may take out the Masons, though, but I thought it would be fun.
Tag (Courtesy of Fkusumot) "If I'm posting in this thread then it's probally a spam thread."