Overseer

The overseer is a zerg unit evolved from the overlord.

Game Unit
The overseer can detect cloaked and burrowed units.

The overseer loses the ability to excrete creep or transport units, but gains the ability to create changelings. It continues to provide control.

Development
Overseers used to have similar special abilities as the overlord, but those were removed.


 * Excrete Creep
 * The overseer can create a small patch of Creep, the radius steadily expanding as long as it remains stationary. This ability is researched at the Evolution Chamber.


 * Slime (also known as "Corrupt Minerals")
 * The overseer can drop a non-attacking slime creature, temporarily disabling resource nodes and xel'naga towers. The slime can be attacked and removed by other forces. The minerals can be covered as they're being harvested, enabling raids which slow down an enemy's economy. The creature must be killed before the minerals can be accessed.
 * This ability took time to "cast" and had a small cooldown timer.

The overseer could create a nydus worm after a nydus network had been produced as of October 2008. This ability cost energy. The overseer lost the ability to make nydus worms as of March 2009.

Removed as of August 2009.