Gykosians live on the planetoid, Gykos. They are green-skinned with insect-like eyes. The Gykosians arms are similar to tentacles of an octopus and close to that of the Minosians, containing three-finger-like appendages. They have two antenna protruding from their heads. Again, like the Minosians. A faction of rebelling Gykosians are lead by the Gykosian Great One against a group of scientists based on Gykos. The faction is defeated by Perimeter Patrol, lead by Lieutenant Groll Mynot and Captain Martin Hawkins.