Felucia

Felucia is a jungle planet featured in Star Wars: The Force Unleashed. It was a fungus covered, disease ridden world that acted as a home for Shaak Ti and the Felucians for many years. It was able to sustain life as well, but the Clone Troopers before it almost always got sick, developed disease, and eventually died. It acted as a stronghold for both the Republic and CIS in the Clone Wars before it gained it's neutrality. It was then taken over by the Galactic Empire.

History
Some time during the Clone Wars, Felucia was farmed for its herbs and plants. When the CIS controlled the world, however the Republic quickly started a war against them and built a medical station. Felucia was ravaged with war and Jedi Master Aayla Secura was sent to help protect it. However, after Darth Sidious was revealed and the Great Jedi Purge started, Aayla was killed by Commander Bly by shooting her in the back viciously. After that, Felucia was taken by the Dark Side of The Force until Jedi Master Shaak Ti came and started teaching Force-Sensative children the Jedi ways. Shaak Ti then saw Starkiller and told her new apprentice, Maris Brood, to hide from Galen. Maris would never see her master again.

Shaak Ti
During the Great Jedi Purge, Darth Vader sent his "secret" apprentice Starkiller to Felucia to deal with Force-sensitives there. Master Shaak Ti had exiled herself to this planet, where she was training the grief-stricken Padawan, Maris Brood, and Felucians for a confrontation with the Dark Lord. After a long battle, Shaak Ti warned Starkiller that the Sith always betray each other, then sacrificing herself in a glow of blue light. With Shaak Ti dead, the Empire began operations on the planet to eliminate the native force sensitives and established a prison facility, from which agents of Bail Prestor Organa rescued Admiral Gilder Varth.

Maris Brood
After returning to Felucia the planet seems darker, growing to the dark side after the death of Shaak Ti and her kindness. Galek, upon arrival, is overcome with sadness and regret of killing Shaak Ti. When Galek finds, fights and then defeats Maris Brood she say's that the planet is dark and it corrupted her and she asks if he can spare her life and let her escape. Whilest Maris doesn't know that all the life on Felucia is extremely sensitive to the force. Any powerful force users can completly change the planet. To the dark side or light side.

External Links and References

 * Felucia on Wookiepedia