I realized this a while ago but i was to lazy to post it
In the first game KotOR I, before Revan was kicked out of the Jedi Order, He went into the ruins on Dantoine, He was dressed in the dark robes and the helmet. Malak said to him something about getting kicked out because the went into the ruins. Wasn't it obvious Revan was falling to the dark side? I mean he was completly covered by black robes and wearing that helmet. I've never seen a good Jedi dressed like that