Pro Zeta Corporation is a protein manufacturing company specializing in synthetic meats. Their headquarters are on Ceti Gamma II.

They distribute their products throughout the Earth Alliance and beyond. They are known for their significant connections with Earthgov and their questionable business practices. Captain Gideon found out about them from Mr. Eilerson while investigating some contaminated food from the Theta 49 colonists' ship.

Eilerson told Gideon that those who investigated the Pro Zeta Corporation were murdered.

It was they, in collaboration with General Thompson, who made it possible for Robert Black and his colonists to get contaminated food just after they left Earth. [1]