They are Gs. And this is the first time you vote me. You and Dru voting Osman when he was already revealed to be the jailer made me write your name off the list of the probable Gs. Either you both are very clever manipulative Gs trying to look naive or you are just not familiar with the game/following the game. Thing is that if this is a gangster tactic, I doubt two of Gs use the same tactic at one night.
I said that Billy and Dru seemed to me like either Gs who are trying to play it like plain Cs or Cs who are not following the game precisely (they voted Osman when he had already revealed his jailer role) but I also said it is not possible that two Gs take the same tactic few minutes after each other.