Testacles the Debug Centurion

Testacles the Debug Centurion is a "cut" non-player character that is still present in the game's files of Fallout: New Vegas.

Background
Upon being spoken to he can: alter the Courier's reputation with various factions of the Mojave Wasteland, spawn Rex, edit quest outcomes, and so on.

Appearances
Testacles the Debug Centurion was added during the development stages of Fallout: New Vegas, but was cut from the final release of the game.

Behind the scenes

 * His name is pronounced "Teh-stah-kleehs", rather than "Teh-stah-kuuls" as some may think at first glance.
 * His name is a nod to a debug character featured in another Black Isle/Obsidian game, Planescape: Torment.
 * In Fallout 2, during the bridgekeeper encounter, one of the answers you can give when you are asked your name is "Testacles".
 * In Van Buren, there is a character named Testocles who simply berates the player, after which the player can counter using a skill above 5. This is likely used as a skill check test.