Jed who believes the Force’s cosmic purpose for the existence of the Sith is as a whetstone against the Jedi order to force them to improve and better themselves until they reach a such a state of harmony and wisdom that through their guidance galaxy-wide peace is established and upheld and the sith are no longer necessary. Has taken it upon themselves to further this utopian ideal by seeking out taboo and forbidden knowledge and techniques and then issuing challenges to Jedi Knights, forcing them to learn and adapt and overcome or be wiped out; those they beat aren’t capable of fulfilling the Force’s ultimate goal of peace.