Gordon Freeman - Inspects 2 targets a night and has a 30% chance to avoid nightkills
Barney Calhoun - Can protect once (even himself) and can't be distracted
Alyx Vance - Distracts once a night and kills a once a night
Eli Vance - Safeguards twice and protects once
Judith Mossman - Spy hax on kill, poison and protect. Vote shield as -9999
Issac Kleiner - Poisons once a night and hax on protect, distract, safeguard and inspect
Odessa Cubbage - Revealing daykill and Bomb
Father Grigori - Unrevealing daykill who can hax unhaxable roles
G-Man - No votes, can't be killed at all, /reveal and can't be poisoned.
D0g - Kills twice a night
Arne Magnusson - Vote counts as 7
Vortigaunts - Hax on all, but very small chance

BAD GUYS:
Dr Breen - Vote counts as 9999 and hax on all.
Combine Advisor Kills through BG and can't be distracted
Civil Protection - Can kill once a night
Overwatch - Kills once a night and can't be distracted
Strider - Kills attackers and has a daykill
Manhack - Protects once a night
City Scanner - Inspects once a night

Headcrabs - Kills once a night
Fast Headcrab - Outspeeds BG's with kill
Poison Headcrab - Poisons once a night
Zombie - Kills once a night and when inspected, seen as Vortigaunts
Poison Zombie - Poisons once a night and when inspected, seen as Vortigaunt
Fast Zombie - Outspeeds BG's and when inspected, seen as Vortigaunt

Antilion - Can kill and distract, can't be haxed
Antilion Guard - Protects, kills and can't be haxed
Antilion Worker - Poisons twice, can't be haxed

Barnacle - Kills anyone doing anything on him, kills once and has 0 vote. Can't even be haxed by Grigori