Purifier (unit)

The purifier (also known as the vindicator and the soul hunter) is a ranged protoss infantry unit.

StarCraft: Ghost
The vindicator, also known as the purifier, was a unit shown for StarCraft: Ghost stealth action game. It carries a single, large "lightning gun" on its arm which fires a long blue pulse.

The purifier does not move while firing the ranged weapon.

StarCraft II
The soul hunter was a protoss ranged infantry unit in StarCraft II. It was canceled during development and was renamed to the purifier.

It rode on a hovering platform and wielded a large ranged weapon which fired arcing electricity.

Game Unit
The soul hunter was strong against biological units and buildings, but weak against robotic units. It started out "a little weak." Against biological units, the soul hunter became stronger every time it killed one or two infantry units, allowing it to fire more beams (up to three) and thus do more damage. It could attack both air and ground units.

The soul hunter was a tier 2 unit. It was produced from a gateway and required a twilight council to be produced.

The soul hunter was canceled as it was difficult to make it easily readable in big battles when the soul hunter had upgraded. Another reason is that the unit was too-heavily targeted against the zerg, since they have so many low hit point units, as opposed to other factions. The unit will appear in StarCraft II, however, as a map editor-only unit.