Wieżyczki są jednym z głównych przeszkód w seriiPortal. Uzbrojone w nieskończoną amunicję i śmiercionośną celność, będą próbowały zabić gracza.
Głosy wieżyczkom użycza Ellen McLain.
Wieżyczki Strażnicze mają wygląd małego robota z trzema nogami. Nie są w stanie wykonać żadnego ruchu, jednak mogą otworzyć swoje "ramiona" z obu stron in order to reveal two gatling guns. The central part of the chassis holds their red 'eye', which emits a targeting laser.
When Turrets are unaware of the player's presence, they will maintain a standby state and will remain motionless with their guns retracted. Moving into their angle of sight however, will cause Turrets to deploy their guns with a voice line before opening fire. They will continue to fire until the player is dead or moves out of sight. If the latter occurs, Turrets will briefly search for the player (as indicated by the movement of the targeting laser), after which they will revert to a standby state.
Turrets can be avoided, disabled or destroyed in a number of ways. The most common method is knocking them over, causing them to flail and fire wildly before deactivating. This can be done by picking them up and dropping them, or using any object to push them. Additionally, the Thermal Discouragement Beam or Emancipation Grid can be used to completely destroy them. It should be noted that once a Turret has been knocked over and deactivated, restoring it to an upright position will reactivate it and the Turret will function normally once again.
The Rocket Turret is a unique enemy in Portal. It appears as a personality core outfitted with a rocket launcher. Upon activation, it will slowly lock onto Chell and emit a sound before launching a rocket. It plays a vital role in the battle with GLaDOS, as rockets need to be sent through Portals in order to hit her, causing personality cores to detach.
Defective Turrets, also called "Crap Turrets" by Wheatley, are incomplete, ammo-less versions of Sentry Turrets. Unlike normal Sentry Turrets, Defective Turrets speak in a masculine, less robotic voice.
They are harmless to Chell, many times making comments such as "If anyone asks, I killed you". Their voice lines seem to imply they are blind, but they are still aware of Chell's presence. They are first encountered in Chapter 5: The Escape.
Frankenturrets are bizarre Sentry Turret-Weighted Storage Cube hybrids created by Wheatley in order to complete test chambers when he had no test subjects. They are first introduced in Chapter 8: The Itch.
Frankenturrets do not speak, and instead emitting incomprehensible chirping sounds. They act as the Chapter's replacement for Storage Cubes, their only difference being that Frankenturrets will hop around aimlessly while not placed on a button. When picked up by Chell, they retract their legs inside their cubes. If they fall over on their sides or upside down, they will wave their legs trying to get up.
Animal King Turret
The Animal King is a unique turret that is only referred to in an Aperture Science slideshow entired "Animal King Takeover" in Chapter 1: The Courtesy Call. The Turret is considerably larger than its Sentry Turret brethren, and appears to operate in exactly the same way. It can be distinguished from ordinary turrets by its immense size, crown and leopard skin-detailed chassis. In the context of the slideshow, the Animal King Turret is used as an example of an entity or organisation capable of taking control of Earth which "...refuses to, or is incapable of listening to reason".
The Animal Turret appears only once at the end of the game, when Chell is travelling to the surface after defeating Wheatley.
Turrets are introduced to the player in Test Chamber 14. Following this, they continue to appear throughout the remaining levels.
Portal: Still Alive
Turrets return in the sequel as both an enemy to Chell and the Co-op robots, and appear fairly early in the game. Distinct versions of the turret are introduced, including the Defective Turret and Animal King Turret.
Turret from Portal
Turret from Portal 2
Defective Turret from Portal 2
Prima Donna Turret from Portal 2
Rocket Turret from Portal
Frankenturret from Portal 2
Frankenturret with outer cover
The Animal King Turret from Portal 2
Animal King Takeover slide from Portal 2
The Turrets and Animal King Turret as they appear in Chamberlock informational videos.
- When GLaDOS attempts to kill Wheatley with a paradox in the beginning of Chapter 8: The Itch, every Frankenturret is fried, implying that they are smarter than Wheatley.
|| Friendly Fire|
Knock down a turret with another turret.
Portal: Still Alive
|| A Feeling Like Floating|
Dissolve a turret.
|| Is Anyone There?|
Complete the game without ever taking a bullet.
|| Saw That One Coming|
Cause a rocket sentry to destroy its own rocket when the rocket has been redirected back towards it.
|| The Camera Adds 10 Pounds|
Knock a turret over with a security camera.
|| No Hard Feelings|
Save a turret from redemption
Use an Aerial Faith Plate to launch a turret
|| Scanned Alone|
Stand in a defective turret detector
|| Can't Touch This|
Dance in front of a turret blocked by a hard light bridge in co-op