Image Credit: LucasArts
#6. Darth Revan
Darth Revan was once a well-respected Jedi, until him and Darth Malak were seduced to the dark side of the Force by the Emperor. New Sith Lords, Darth Revan and Darth Malak left Dormund Kaas, servants to the Emperor. Revan dove deeper and deeper into the dark side when he found the tomb of Sith Lord Tulak Hord. He also recovered a Star Map from the tomb of Sith Lord Naga Sadow.
After he became a Sith Lord, Revan became a user of Force lightning. During a duel, his power in the dark side could become so strong that it would cause a Force storm. Revan was also able to use the Force to slow the bodies and minds of his enemies, feasting on their energies to replenish his own.