Mineral Cost: 125
Vespene Cost: 100
Hit Points: 40
Shield Points: 80
Supply: 2
Produced From: Gateway
Requires: Dark Obelisk
Type: Biological - Light
Movement Speed: Normal
Defense Level: 1
Damage (Damaging Method + Target): 45 (Warp Blades + Ground)
Abilities: Archon Warp, Cloak (innate)
Range: Melee
Hotkey: D
The Dark Templar is a very dangerous melee unit that has two basic abilities: Cloak (passive) and Archon Warp. The Dark Templar's cloak is on at all times and renders the unit invisible to enemies. Archon Warp, on the other hand, allows the Protoss player to sacrifice either two Dark Templars, one Dark Templar and one High Templar, or two High Templars to form an Archon (a powerful assault unit). The Dark Templar's cloak and unique melee capabilities contrast with the High Templar's unique spellcasting capabilities.
Multiple Dark Templars are visible fighting on the ramp in this screenshot, they are the pale teal units:
From Starcraft2.com:
The Dark Templar are powerful psionic warriors whose forebears were exiled from the Protoss homeworld of Aiur over a thousand years ago. The Protoss who would eventually become the Dark Templar were banished for their refusal to join the emerging Khala, the communal mind link shared by all Protoss, and the accompanying caste system enforced by the ruling Conclave of the Protoss.
Some Protoss rejected this movement, believing that their individual identities would be erased to further the suffocating rule of the Conclave. They even went so far as to sever the long nerve tendrils that characterize the Protoss. This act symbolically and literally cut them off from the primal chord of their race. The Conclave saw these rogues as a threat to the new order and charged the Templar caste with hunting and destroying them.
The Templar, led by the idealistic warrior Adun, could not bring themselves to slay fellow Protoss and thus hid them. The Conclave's fears appeared justified when Aiur was lashed by a wave of violent psionic storms unleashed by the undisciplined minds of the rebels. The Conclave was not willing to punish the Templar openly for their disobedience because doing so would reveal the existence of the rebels. Instead, the dissident Protoss were loaded aboard an ancient but functional xel'naga vessel and launched into space.
The exiled Protoss wandered far before eventually making a new home on the twilight world of Shakuras. They developed a solitary and independent culture, with individuals often widely scattered across space in their own ships, exploring and contemplating the mysteries of the universe. Over time these Dark Templar have learned to wield a very different kind of psionic strength than that of the Khala: the energies of the Void, the dark spaces between worlds.
The Dark Templar are most renowned for their ability to bend light around their bodies to become invisible at will, and a true master of the Void can achieve much greater feats than this. Armed with their potent warp blades, the Dark Templar are deadly and relentless foes, capable of crippling conventional forces with their devastating strikes.
Though severed from their homeworld and feared by their own brethren for many centuries, the Dark Templar never abandoned their love of Aiur. In recent times they were reunited with the Protoss of their homeworld when the heroes Tassadar and Zeratul joined forces to fight the zerg Overmind. The Overmind was defeated, but the planet Aiur was ravaged in the process and so badly overrun by
Zerg that the survivors retreated to Shakuras. Now the Protoss who were once exiled find themselves playing host to refugees from their old home.
Game Info 
