Kyron

Once a flourishing, populated world, Kyron has been hit by hard times ever since it has been drained dry by the Decepticons.

Fiction

Dreamwave Generation One continuity

With the interstellar communications down, Skystalker and Skyhopper had to look for an alternative method to reach Shockwave on Cybertron to notify him on the return of Countdown. They found Kyron and with that just the energy needed for a cross-galaxy broadcast. Recipe for Hate

The AllSpark Almanac

Kyron was a planet in the Milky Way under the control of the Intruder Empire, but was somehow destroyed. The Complete AllSpark Almanac