Tempest

The Protoss Tempest was an air unit that was canceled in StarCraft II, being replaced by the original Carrier. According to Dustin Bowder, "the Tempest didn't feel right and that there was too much of an emotional connection with the original unit."

Like the Carrier from the the original StarCraft and Brood War, the Tempest had powerful shields and, while having no armaments of its own, carried a number of small fighter-type drones called Shuriken that launched, surrounded and swarmed a target, doing little damage individually but significant damage when combined whilst maneuvering rapidly, making it difficult to destroy. The drones could be auto-built with a right click, a behavior which may have been carried over to the Carrier.

The Tempest was strong against ground targets, but was ill-equipped to handle air-to-air encounters; it had poor air defense as its shields did not activate against air attacks, but the shields took little damage from ground attacks.

The Tempest had a "dark" color scheme, similar to that of the Stalker.

In comparison to the Carrier, the Tempest was slightly weaker, but cost fewer resources to build.

Trivia
The StarCraft I Carrier page at StarCraft Compendium features a Carrier named "the Tempest". Hold your mouse cursor over the portrait to see the name of the Carrier.