StarCraft Wiki


5,769pages on
this wiki
Shakurus SC1 Art2

This article is about the StarCraft II unit. You may be looking for:

"There’s a terror I don’t need to tell you about however. It needs no introduction. It’s been slapped on every billboard and leaflet you've ever seen pertaining to the Protoss, and it is truly one of the most fearsome sights you could ever behold. The Colossus, standing at over 17 stories tall, is a skyscraper of destruction. We've gone and compiled a full report on all the data we've managed to gather on this fearsome tower of death, but honestly, all I feel after reading it is more afraid. Still, it is essential to understand our enemy, overcome any hesitation, and press forward."
Colossus SC2 Cncpt1
Earliest sighting

Kalath Intercession

Latest sighting



Kalath Intercession (since reactivated)




Armored walker


4 legs


17 stories


Thermal lances



The colossus is a massive protoss robotic walker. It is designed to destroy large numbers of weaker ground targets.

The plural of colossus is colossi.[1]


Colossus SC2-LotV Cine1

A colossus

The colossus is an antiquated protoss war machine, dating back to the Kalath Intercession.[2] It is a towering construct, striding across the battlefield on four tall, slender legs which give it an extremely high level of mobility. The great height of the machine allows it to step up and down cliffs and other steep elevations with little difficulty, and gives it a dominating field of fire.[3] The colossus's slender legs were designed to carry its massive weight with ease, while allowing for the traversal of rough terrain and steep elevations. Its towering four leg configuration has multiple gyro-stabilizers to keep the Colossus stable while moving and firing, and also denies the enemy the advantage of higher ground.[4]

The colossus can be transported by the warp prism, which transforms it and other transported units into energy.[5]

The colossus is feared for being a war machine, and some protoss believe they cannot be controlled and could turn against them.[6]


Colossus SC2 Cncpt3

Colossi in action

The heavily armored hull of the colossus carries two powerful thermal lances: one mounted on each side of its body. Complex focusing and targeting systems are used to pinpoint the continuous damage output of the thermal lances for optimal efficiency.[3] The targeting system uses an AI, along with gravity-sensitive gyroscopes, to analyze target composition, and predict their movement patterns. This ensures the thermal lances' beams will sear a path of maximum destruction among enemy forces,[4] cutting a fiery swathe of destruction through multiple enemies with each firing cycle.[3] The targeting system is so precise that the colossus can fire its weapons point blank without risk of damaging itself.[4]

The lances themselves fire beams of superheated plasma that quickly incinerate scores of enemy ground targets,[4] able to reduce a group of marines to ashes in an instant.[7] While powerful, colossi weapons present a design issue, as their range is somewhat limited. Khalai phasesmiths built an extended thermal lance with enhanced airflow that could operate at higher temperatures, increasing beam velocity and effective range without loss in power output.[4]


The colossus is unique in that it was created purely as a war machine, in contrast to most protoss automatons which were mainly created for industrial and/or resource gathering purposes. Such a trait was demonstrated by the mass slaughter carried out against the kalathi, appalling the protoss. As such, the Conclave outlawed the manufacture of colossi, and existing machines were deactivated before being sealed away. Some were sent to distant asteroids and uninhabited moons.[3] Others were stored on Aiur, some underwater, awaiting a reactivation signal.[8] They weren't reactivated in time for the war on Aiur because it would take too long.[9]

VikingColossus SC2 Art1

Colossus and Viking in combat

The war against the zerg, however, prompted the return of the colossi to the protoss arsenal.[3] In 2503,[10] the protoss began collecting them using coordinates collected from a preserver, despite misgivings.[6] The colossus has since become synonymous with the protoss by the citizens of the Terran Dominion.[11]

Several colossi were found and reactivated by the Tal'darim. These colossi were refitted with charged pulse blasters to eliminate priority targets, and renamed into wrathwalkers.[12]

In 2504, Dark Prelate Zeratul traveled to Aiur and reactivated some colossi as part of a mission to study the body of the deceased Overmind.[8] Later that year the Tal'darim used them as well in their defense of a xel'naga temple on Xil.[13]

In 2506 colossi were deployed in the Reclamation of Aiur to clear out the warp conduits of zerg forces.[14] Later in the End War they were used to aid in deactivating the shield around Cybros.[15] Colossi developed by the Purifier program were later added to the Daelaam arsenal, employing more destructive incendiary weaponry than their Khalai counterparts.[12]

Game Unit

Colossus SC2 Head1
Colossus SC2 Rend1



Purifiers SC2-LotV Logo1 Purifier


Battle strider


Thermal Lances



Sight range



300 Minerals Terran SC1


200 ProtossVespene SC2 Game1


6 ProtossSupply SC2 Icon1

Build time

75 Time SC2 Game1

Produced from

Robotics facility


Robotics bay











Collision radius






Hit points



1 SC2ProtUpgrdGrndArm

Armor type


Thermal Lances

15RipwaveMissiles SC2 Icon1



  • Ground



6 (9 with Extended Thermal Lance) SC2ProtExtendThermalLance


+2 SC2ProtUpgrdGrndWeap



Kill score





Targeted as both an air and ground unit. Can step up and down elevations.

Colossus SC2 Game3

Protoss colossus

Colossi are not strong for cost and require support, such as a front line of zealots.[16] They are strong against marines, zealots, hydralisks and zerglings, but weak against thors, immortals, ultralisks, and anti-air units like the viking, phoenix, and corruptor.

Height and Climbing

The colossus appears to step over ledges due to StarCraft II's inverse kinematics (IK) system.[17] It can climb ledges only one level at a time and is blocked by taller cliffs.[18] It can also step over smaller friendly units, but not other colossi or obstacles. Like other massive units, the colossus can collapse a Force Field simply by being ordered to move through it.

A colossus is tall enough to see the tops of cliffs, enabling it to climb them[18][19] and fire upon the high ground without a spotter.

The colossus' height enables anti-air attacks, such as those of the missile turret, to strike it (even though it is a ground unit).[20] Blizzard has confirmed that this is because the colossus is so tall that it counts as both a ground and air unit for the purpose of what attacks are able to hit it.[21] If an attacking enemy unit (such as the thor) which can attack both ground and air units attacks a colossus, it will use whichever attack is stronger against the colossus.[22]


Colossus SC2 GameAnim1

The colossus attacking reapers

The colossus attacks only ground units.[23]

The attack animation is a sweeping beam, with the animation taking about a second to complete. All targets continue to take damage simultaneously.[24][25] The attack always strikes a linear area perpendicular to the direction the colossus is facing. This allows for a fine degree of control.[26][27][28]

The attack does linear splash damage which is very effective against groups of units such as marines and zealots.[29] It is safer to use colossi against terrans rather than psionic storms, since ghosts counter high templar. Against zerg, colossi are very effective against hydralisks which have become more dangerous with roach support.[28]

The beams do not have a "blind spot" and can strike enemies right next to the colossus.[30]


Cliffwalk SC2 Icon1 Cliff Walk

The Colossus can walk up and down cliffs.


Wings of Liberty

Colossi are usable in the StarCraft II: Wings of Liberty protoss mini-campaign, available after the "Echoes of the Future" mission, Zeratul finding some on Aiur.[8]

Legacy of the Void

In the single-player campaign, the colossus is one of three robotic siege units the player may use, the others being the reaver and wrathwalker. The colossus has the passive ability Fire Beam, which sets the ground hit by its attacks on fire, dealing 100 damage over 5 seconds to enemies nearby. This makes the colossus more potent than ever against masses of enemies. They deal heavy damage over time with this ability, in contrast to the reaver and wrathwalker having higher base damage but lower attack speed.


SC2ProtExtendThermalLance Extended Thermal Lance

Increases the range of the colossus' attack from 6 to 9, giving it siege range.

Purchased from Robotics bay
Hotkey E
Cost 200 Minerals Terran SC1 200 Gas Terran SC1 140Time SC2 Game1

Applies to zealots, dark templar, archons, stalkers, immortals, sentries and colossi.

Purchased from Forge
Hotkey G
Level 1
Cost 100 Minerals Terran SC1 100 Gas Terran SC1 160Time SC2 Game1
Level 2
Cost 150 Minerals Terran SC1 150 Gas Terran SC1 190Time SC2 Game1
Level 3
Cost 200 Minerals Terran SC1 200 Gas Terran SC1 220Time SC2 Game1

Increases the armor of protoss ground units.

Purchased from Forge
Hotkey A
Level 1
Cost 100 Minerals Terran SC1 100 Gas Terran SC1 160Time SC2 Game1
Level 2
Cost 150 Minerals Terran SC1 150 Gas Terran SC1 190Time SC2 Game1
Level 3
Cost 200 Minerals Terran SC1 200 Gas Terran SC1 220Time SC2 Game1
  • +1 armor to shields per level.
Purchased from Forge
Hotkey S
Level 1
Cost 150 Minerals Terran SC1 150 Gas Terran SC1 160Time SC2 Game1
Level 2
Cost 225 Minerals Terran SC1 225 Gas Terran SC1 190Time SC2 Game1
Level 3
Cost 300 Minerals Terran SC1 300 Gas Terran SC1 220Time SC2 Game1


Main article: Colossus/Development


  • When colossi attack from a cliff, they can still be targeted by ranged units below them, unlike other ranged attackers such as the stalker.[31]
  • Air units have been noted to fly through colossi, their height being ignored by game mechanics in this sense. Blizzard does not intend to change this, as shrinking the air unit would look bad and shrinking the colossus would make its ability to walk up cliffs less believable.[32]



  1. Colossi? Colossus's? Colossice?

    I want to know so that when I crush you with my Coloss___ I can laugh ahahhahahaha.

    Colossi, officially ;) Karune, Ylleks. 2009-01-28. What's the plural of Colossus? StarCraft II General Discussion. Accessed 2009-01-28.
  2. Kindregan, Brian T. "Mothership." (January 15, 2010). Blizzard Entertainment. Mothership Accessed 2010-01-15.
  3. 3.0 3.1 3.2 3.3 3.4 2007-06-28. Colossus. StarCraft II Features at Blizzard Entertainment. Accessed 2007-07-01.
  4. 4.0 4.1 4.2 4.3 4.4 2015-02-05, Colossus Science. Blizzard Entertainment, accessed on 2015-02-11
  5. Karune. 2007-09-20. StarCraft II Q&A - Batch 14. StarCraft II General Discussion Forum. Accessed 2007-09-21.
  6. 6.0 6.1 Watrous, Valerie. "Colossus." (Apr. 07, 2011). Blizzard Entertainment. Colossus Accessed 2011-04-11.
  7. Races: Protoss. Blizzard Entertainment, accessed on 2010-08-07
  8. 8.0 8.1 8.2 Blizzard Entertainment. StarCraft II: Wings of Liberty. (Activision Blizzard). PC. Mission: Wings of Liberty, Echoes of the Future (in English). 2010-07-27.
  9. Blizzard Entertainment. 2012-11-05. StarCraft II Creative Development Q&A - Part 5. Blizzard Entertainment. Accessed 2012-11-05.
  10. September 27, 2011. "Timeline." StarCraft: Ghost: Spectres. Simon & Schuster (Pocket Star). pp. 393-416. ISBN 978-1439-10938-0.
  11. 2015-02-05, Death from Above: Protoss. Blizzard Entertainment, accessed on 2015-02-08
  12. 12.0 12.1 Blizzard Entertainment. StarCraft II: Legacy of the Void. (Activision Blizzard). PC. War Council interface (in English). 2015-11-10.
  13. Blizzard Entertainment. StarCraft II: Wings of Liberty. (Activision Blizzard). PC. Mission: Wings of Liberty, The Dig (in English). 2010-07-27.
  14. Cite error: Invalid <ref> tag; no text was provided for refs named SC2:LotV:ForAiur.21
  15. Cite error: Invalid <ref> tag; no text was provided for refs named SC2:LotV:UnsealingthePast
  16. imba.Adolf [RA]. 2009-11-08. We played Starcraft 2: A Report From IgroMir, Day 1. StarCraft Legacy. Accessed 2009-11-09.
  17. Stapleton, Dan. "StarCraft II." PC Gamer Magazine 164 (August 2007): 20-30.
  18. 18.0 18.1 What he said. ;)

    Colossus can have a vision of the upper ground just like the air units, while Reaper can't as a ground unit.

    Colossi and Reapers can't climb up a cliff of 2 level at one time.
    Cydra. 2009-02-17. Cliff Climber Vision. StarCraft II General Discussion Forum. Accessed 2009-02-18.
  19. The Colossus will be able to see on top of cliffs, allowing it to climb up without a 'spotter.' Karune. 2008-02-13. Terran Medic Abilites. StarCraft II General Discussion Forums. Accessed 2008-02-13.
  20. 2007-05-19. Cinematic Trailer. Blizzard Entertainment. Accessed 2007-08-12.
  21. Karune. 2007-07-23. StarCraft II Q&A - Karune Briefings. StarCraft II General Discussion Forums. Accessed 2007-09-06.
  22. Karune, StarCraft Legacy staff. 2009-04-04. StarCraft: Legacy StarCraft II Exclusive Q&A with Karune. StarCraft Legacy. Accessed 2009-05-18.
  23. 2007-05-19. Gameplay Trailer. Blizzard Entertainment. Accessed 2007-08-12.
  24. Phreak. 2008-07-07. StarCraft II - Blizzard Worldwide Invitational Version. Blogspot (Blog). Accessed 2008-07-09.
  25. The artists are still working with what would look best on the Colossus. In the latest build, many have seen that there is a beam sweeping from one side to another as the current visual.

    Please also note that this is temporary art still, and even though that beam does seem to sweep randomly, it is actually doing instant damage to the whole line rather than what the visual implies, which is doing damage from one side to the other.
    Karune. 2008-09-09. Is the Colossus's dual-beam back? StarCraft II General Discussion Forum. Accessed 2008-09-09.
  26. The Colossus always attacks in a linear area horizontal to where the Colossus is facing. This does take a little more coordination than a Hellion or Lurker, but will no doubt still be possible at a high skill level of play. Karune. 2009-04-28. Has the Colossus changed in recent builds? (post 7) StarCraft II General Discussion Forum. Accessed 2009-04-28.
  27. Even though the beam is currently shown visually in various ways, the damage is done to all units in that straight line at the same time instantly. That line will always be based on the position you are attacking from, so in that way there is a lot of control as how to use the Colossus. Karune. 2008-10-20. Karune: Colossus. StarCraft II General Discussion Forum. Accessed 2008-10-20.
  28. 28.0 28.1 Colossus is Tier 3. He has a very powerful attack that strikes in a line relative to his position. He is a vital weapon against Terran infantry and Hydralisks which have become more of a threat when being protected by Roaches. Against Terrans you can go High Templar to deal with infantry, but Ghosts can really ruin that. Colossus is a safer choice.

    The original attack is not coming back. The old beam was just "more damage." Simple, but not fun. The current Colossus weapon encourages micro since it really matters who you shoot and the angle you shoot them from. Fortunately since the Colossus can step up and down cliffs and over friendly units he can move to the optimal position if you are fast enough. The biggest problem he has right now is with Neural Parasite on the Infestor. It's really giving the Colossus a hard time. We are working on that today.
    Cavez. 2009-05-15. Regarding the most honourable Colossus. StarCraft II General Discussion Forum. Accessed 2009-05-16.
  29. Karune. 2008-02-08. StarCraft II Q&A - Batch 29. StarCraft II General Discussion Forum. Accessed 2008-02-08.
  30. It does not currently have any blind spots. On a side note, we are working to buff up the Colossus a bit more to have more burst attack (more attack damage but slower attack speed). Previously, in order for the Colossus to be very effective, a Protoss player would need several of them on the field attacking at the same time. This change should make the Colossus more effective with smaller numbers. Karune. 2009-02-03. Does the Colossus have a blind spot? StarCraft II General Discussion Forum. Accessed 2009-02-03.
  31. PerfectionistEmblem. 2009-09-22. Starcraft 2 - Skyhigh vs Nada at Blizzcon. YouTube. Accessed 2009-10-17.
  32. 2010-04-30, BlizzChat Developer Chat on Twitter 4/30. forums, accessed on 2010-05-06
  33. 2015-10-02, This is your StarCraft 2: Legacy of the Void Collector's Edition unboxed. Polygon, accessed on 2015-10-03
  34. Blizzard Entertainment. StarCraft II: Legacy of the Void. (Activision Blizzard). Cinematic: StarCraft II: The Story So Far (in English). 2015-10-27.

Around Wikia's network

Random Wiki