Executioner

From SA Mafia Wiki

An Executioner is a role that allows a player to quicklynch another before hammer. Typically the executed player must be halfway to hammer. The Execution can occur privately through a mod communication, likening it to a daykill, or publicly through a ##vote or other day action, likening it to a Double Voter.

The role is especially useful for Scum since it allows them to quickly kill a player and end the day without having to keep discussion going or needing to convince a majority of the players to misvote.