Quinlan Vos

Quinlan Vos was a Jedi agent who was tasked with assassinating Count Dooku by the Jedi Council during the Clone Wars. During his mission, he struggled with the seduction of the Dark Side.

Lightsaber Combat Style
Quinlan had been trained in the lightsaber style of Vapaad which skirts the Light and Dark Side of the Force. Mace Windu, the order's most proficient practitioner of Vapaad, advised Quinlan against using this style due to his psychological instability with the Dark Side.

Order 66 & Survival on Kashyyyk
Quinlan was on Kashyyyk (Masters Luminara Unduli and Yoda were both stationed there as well) when Order 66 was announced. He escaped and survived in the Kashyyyk wilderness.

References