Chaar

Chaar is the planet where the Decepticons settled after being driven from Cybertron. It is a burned-out, barren husk of a planet. The Chaar spider andenergy leeches are some of the few native animals to the dead world.
 * Crackhead English-Malay Dub Name: Chollo

The Transformers cartoon
After the battle against Unicron, the Autobots successfuly drove away all the Decepticons occupying Cybertron. With Galvatron missing, the Decepticons became directionless and chose to seek refuge on the burned-out world of Chaar.

The Decepticons nearly starved to death on the wasteland of a planet, until Cyclonus and Scourge successfully retrieved Galvatron from his resting place on Thrull. Reinvigorated, the Decepticons gradually transformed the planet into a suitable place to live, with cities and battle stations.

Robotmasters
The Autobot Road Rocket resided on Chaar before coming to Earth to be Optimus Prime's bodyguard.

Note: Robotmasters takes place in 2004.

Dreamwave comics
Once a populated planet, Charr became a barren wasteland crisscrossed by lava flows as a result of natural disaster.

Cybertron cartoon
Charr has been reduced to a dangerous asteroid belt, though its metallic moon still floats within the dense rocks, a marginally more stable location.

During the intermezzo between Energon and Cybertron, Wing Saber and Optimus Prime were involved in a rescue mission within the Charr asteroid belt. Under desperate pressure to get out quickly, they attempted to link up. The experience ended badly, and Optimus would later claim to never have heard of two Transformers combining. United