Gaolers, also called Wardens or Jailers, are known for keeping prisoners in check. These villains are feared for or known to imprison their captives, whether it is in a jail cell, a cage, etc. For obvious reasons, the vast majority of these villains are Corrupt Officials. Many are also Psychopaths who enjoy tormenting their victims by imprisoning them. Ironically, some Gaolers can be Prisoners themselves.

Gaolers can qualify as Complete Monsters if they imprison innocent people and torture their prisoners.

There are also certain kinds of Gaolers who can be known under a distinct subcategory known as Trap Masters. Trap Masters are those who are skilled at ensnaring and trapping others, thereby leaving them to be imprisoned.