GHOST ROLES

As the Warden, you can protect someone (optimally a crewmate) to notify them about being in danger and to give them a temporary speed boost.

As the Minion, you can protect someone (optimally a crewmate) to blind them for a few seconds.

As the Haunter, when you complete all of your tasks, a random living impostor's name will show in red to everyone in meetings. When you have 1 task left, all impostors will get an arrow pointing towards you, and if any of them come close to you, you lose this role.

As the Phantom, you must finish all of your tasks to win! Depending on a setting, you may also end the game and win alone if you do so!

As the Bloodmoon, you can use your protect button on someone to make them die after a set amount of seconds. They know about this.

The vanilla Guardian Angel role, as a ghost role.