Zyyx

The Zxxy is a mysterious spaceborne creature assumed to be from another galaxy.

In the year 2070, the USS Agile encountered a starship the size and shape of a planet. The Agile was pulled inside of a door on the side of the ship by a tractor beam, inside of the starship there were ruins from other federation starships and a captured Zyyx who attacked the Agile. The Agile was forced to fight the Zyyx to survive, and to escape. Commanding Officer Roy Wales managed to kill the Zyyx and the Agile left the sphere unharmed (A:"Trapped").