Nano-Klick - A Cybertronian unit of time measurement that is approximately one Earth second.
Nebulan - An inhabitant of Nebulos. Nebulans went on to become Headmasters, Targetmasters and Powermasters.
Nebulos - A world filled with humanoid beings who would eventually join with the Autobots and Decepticons to create Headmasters, Powermasters and Targetmasters. Sometimes referred to as Nebulon.
Nemesis - The Decepticon starship which pursued the Ark to Earth.
Nexus Zero - The region of space where the Vok reside.
Nucleon - An alternative Transformer power source which rendered a Transformer unable to transform, but extremely powerful.