Kadann is a character that appears in the Star Wars expanded universe. He was a Jedi Knight who turned away from the Jedi Order to embrace the dark side of the Force, becoming the Supreme Prophet of the Dark Side under the rule of Emperor Palpatine.
A diminutive Human male born in the waning days of the Galactic Republic, he was found to be Force-sensitive and taken to be trained as a Jedi. While he passed the Jedi Trials and ultimately became a Jedi Knight, Kadann was a contemplative, intellectual being who shied away from action. A budding philosopher, he began to question the Jedi Code's position on the dark side, eventually coming to the conclusion that both light and dark were necessary if one was to achieve true mastery of the Force. He was seduced by the dark side, finding that he had a natural affinity with it. It also provided him with precognitive abilities that allowed him to frequently see possible futures. Kadann left the Jedi Order and traveled the galaxy for a time, honing his skill and taking another former Jedi, Jedgar, as his apprentice.
He was eventually visited by Darth Sidious, Dark Lord of the Sith, who recruited the two Dark Jedi to his cause. Sidious introduced them to the Prophets of the Dark Side on the planet Dromund Kaas, and Kadann eventually became the Prophets' leader. Supreme Prophet Kadann served as an advisor to Sidious after he became Emperor from the galactic capital of Coruscant. However, in 4 ABY, Kadann had a vision of the future of the impending Battle of Endor which saw the Empire defeated; neither his fellow Prophets nor Sidious saw anything other than an Imperial victory. Palpatine decided he no longer required the Prophets' services, and sent his Inquisitors to raze their headquarters on Dromund Kaas. Kadann and the surviving Prophets, believed by the Empire to be dead, fled to distant Bosthirda. Kadann waited in patience as Sidious was killed at Endor, and decided not to act when an impostor Kadann emerged as a potential heir to the Empire. Eventually, however, the Supreme Prophet was tracked down by Azrakel, a former experiment of his to see how long a being could withstand the power of the dark side, who slew Kadann and many of his fellows; the remaining Prophets were cut down by Lumiya, Dark Lady of the Sith, and her apprentice, Carnor Jax.