This article concerns the StarCraft NPC. You may be looking for:
Stealth Close Combat Trooper
Dark Templar units could not be created in the original StarCraft. They were seen in a zerg mission and given to players as special units at the start of two protoss campaign missions. They had no abilities beyond cloaking. Aside from that they were almost identical to their StarCraft: Brood War counterparts, with two exceptions - they move slightly slower and have higher base attack in exchange for a lower benefit from weapon upgrades.
Tassadar and other protoss forces rescued Zeratul from imprisonment on Char, bringing them to Aiur, where they participated in the Protoss Civil War. They aided Tassadar's Khalai forces in its victory.
This unit is permanently cloaked. They cannot be seen or directly attacked by enemy forces, unless they have detector support.