Mustafar

Mustafar was a lava planet.

Mission to Mustafar
See also- Mission to Mustafar 

The Trade Federation used Mustafar as a base late in the CIS and Republic Conflict. The Federation's Viceroy, Nute Gunray was told by his secret ally, that Anakin Skywalker, who had now become Darth Vader would go and look after them. Vader arrived on Mustafar and was greeted by Gunray. Vader ingnited his lightsaber and killed the two guards, Gap Nox and Fame Drimal. Then, Vader killed Aito Laff, Aruteous Gunnay and Gunray. Vader left Mustafar with dead bodies of Neimoidians.

After the Mission
Soon later, Yoda and Jard Kenobi arrived and checked the security recordings.

Maul's Base
Mustafar was used as Darth Maul's base. Maul was killed in it and Mustafar was abandoned forever.