Ghost (StarCraft II)

Ghosts are feared terran covert operatives. They are known for their skill, psionic powers and ability to cloak.

Ghosts take up two slots in a bunker. They have a Hold Fire command, enabling them to hide their presence even when hostile units approach.

Ghosts make good counters against ravens, mutalisks, infestors and high templar, but are weak against stalkers, marauders, banshees, zealots, and zerglings. They can also be used for mid game mineral line harassment and hydralisk hunting. They are not useful against a zerg force as a whole, while their EMP may be used to severely weaken protoss forces.

Ghosts can drop nukes very quickly. When backed up by medivac dropships, they can be moved from one strike zone to another, and heal the cloaked ghost whenever it gets attacked.

In the Wings of Liberty single-player campaign, ghosts are an alternative to spectres, provided if the player sides with Nova over Gabriel Tosh in a branching mission. Ghosts can be upgraded to have an extra 100 energy upon being trained, and to have permanent cloaking without the need for energy.

Development
Ghosts used to possess these abilities.