I mean I've always seen the typical Jedi that tries warning people to stay away from or to not give into the dark side. But I've also wondered if a Sith who has some respect for an enemy Jedi would not want to see that Jedi become consumed by the dark side or for a Sith that has walked such a dark and miserable path that he or she wouldn't wish that fate on anyone else. Ideally during the epic final fight of a noble and famous jedi with a long history of battle with said sith would start to become corrupted and the Sith would become alarmed and say "Are you insane? Do you have any idea what giving into the dark side will do to you! It doesn't matter what your intentions are Jedi if you go down this path you'll lose everything and all that will be left of you is a monster. Would you go that far to become pitiful being like myself that succumbed to hatred and vengeance? If I am to be defeated it must be at the hands of a Jedi. Don't do it don't become a monster like me."