Quack

> Each night, may visit and prevent a player (or themselves) from conversions
>
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**Quack** is a mafia-aligned protective role that, unlike most protectives, prevent a player from being converted rather than preventing them from being killed. Also unlike most protectives, Quack has the ability to protect itself. Psychiatrist is the town-aligned version of Quack.

## Mechanics

Each night, the Quack may choose a player to visit. The Quack may also choose themself, if they so desire. The chosen player will be protected from conversions for that night. Most protectives, such as Doctor, can only protect from one kill. Quack, however, can protect from a near infinite amount of conversions. Quack cannot prevent its own conversion of a Killer (explained below).

* If a Quack chooses to protect a Killer at night, the Killer will convert to a Traitor.
	+ Psychiatrist can also convert any Killer it visits. If a Psychiatrist and a Quack visit the same Killer on the same night, the Quack has priority, and the Killer will convert to Traitor.
		- If there are multiple Psychiatrists and Quacks converting the same Killer, the number of each determines what the Killer will convert into. If the number of Quacks is equal or greater than the number of Psychiatrists, the Killer will convert to Traitor. If not, the Killer will convert to Villager.
			* For example, if 3 Psychiatrists and 1 Quack convert the same Killer, the Killer will convert to Villager. However, if 4 Psychiatrists and 4 Quacks convert the same Killer, the Killer will convert to Traitor.
	+ Outside conversions will not cancel out the Quack's conversion of a Killer as with most conversions. For example, a Corruptor and a Tax Collector converting the same player will result in the chosen player staying unconverted. However, a Quack and a Tax Collector converting the same Killer will result in only the Quack's conversion going through, not the two cancelling each other out, as the Quack's main purpose is to block other conversions.
	+ Quack will **not** convert a Killer that the mafia chose to kill at night. (This was formerly a bug, as explained below.)
	+ Quack will **not** convert any Killer that they give an Immunity Idol to at night. (This was formerly a bug, as explained below.)
* If a Quack chooses to protect a mafia-aligned player, and the Masons choose to convert that player, all Masons will still die.
* If a Quack chooses to protect player who is a Cult, and the Masons choose to convert that player, the chosen player will still die.
* If a Quack chooses to protect player who is a Shogun, and someone chooses to convert that Shogun, the player who attempted to convert the Shogun will still die.

## In Setups

In making a setup, the Quack is a way to prevent undesired conversions from occurring, which would otherwise be harmful to the mafia. Quack may want to visit mafia-aligned players or non-mafia-aligned players, depending on the scenario. For example, in Mason Relay, Quack can help prevent the spread of Masons, and its existence prevents the Masons from openly saying who they will visit each night. An example of Quack protecting a mafia could be preventing a Tax Collector from accidentally converting an important mafia member like a Godfather.

## Gameplay

In gameplay, the Quack is often important for helping stop the spread of conversions. However, once the ability to convert has been contained, such as a Cult Leader dying, Quack's importance drops significantly. Who Quack wants to visit entirely depends on the setup, so hosts should ensure that players understand the Quack's role in a setup before the game begins.

## Trivia

* Quack is one of six roles that can visit itself, the other five being Handyman, Lurker, Patroller, Psychiatrist, and Understudy. (This is not including anyone who is made to visit themselves due to Trancer.)
* Quack is one of three roles that can prevent conversions, the other two being Psychiatrist and Shogun.
* Quack is the only role on the site that starts with a Q.
	+ It and Delinquent are the only two roles with a Q in its name at all.
* There was formerly a bug where, if a living Quack existed and no living Busboys existed, the mafia night party would unexpectedly convert any Killer they killed into a Traitor.
	+ This was due to the reason that Quack's converted *any* Killer it visited into a Traitor, not just Killers it visited as a part of its normal night action.
		- Similarly, there was formerly a bug where a Quack passing an Immunity Idol to a Killer would convert them in the same way, for the same reason.

## See Also

* Killer
* Psychiatrist