From SC2Pod
The Wraith is a fast moving air unit that can attack both air and ground targets. It can be upgraded with the Cloak ability and the Apollo Reactor for even more efficient scouting and harrassment.
Lore
The versatile one-man Wraith fighters are a new addition to the Colonial space forces. Traditionally, most space battles took place between large capitol ships and smaller gunships, but Tarsonian technicians found that small, dynamic high-speed fighters could repeatedly deal damage to large ships while still evading most defensive battery attacks. The Wraith is the newest of these space
superiority fighters, and is armed with not only air-to-air missiles, but also utilizes a belly-mounted burst laser for ground attacks.
Cloaking Field
The new CF/A-17G Wraith features a built-in cloaking field which runs off of the fighter’s main power supply. When active, the cloaking field hides the Wraith from enemy view. This has proven invaluable in both base defense and strike operations.
Weapons
Abilities
Upgrades
StarCraft 2
The Wraith has been replaced by new units such as the Banshee and Viking, which offer the same aerial mobility and even more versitility.