In reference to the question of was Desann a Sith, I'd say he was. Not only was he a master to his apprentice Tavion, which is pretty much all you need...but he had plans to build an army of Dark Jedis. IMO that seperates him greatly from just a Dark Jedi.
Originally posted by Darth Rancorous Desann is way too stupid to be a sith. He had the power of the valley and all he did was make reborn.
Unfortunately, characters are only as intelligent--and games are only as consistant--as their creators, and let's face it, by the dialogue in these games alone, the writers of these things have to be retarded.
Either that or they just wanna keep consistant with the storyline of Good ruling the galaxy until the Yuuzhan Vong invades and they weren't open to all options... *shrug* Something tells me the Jedi Academy storyline might be better.