- "But why expect better from the Republic? That fool Captain Morvis is exactly who they are—no judgement, all ambition! At least Mandalorians believe in something, Zayne. Yes, they can be indiscriminate and brutal, but with our guidance. They can change. The Republic can't. We're on the wrong side!"
- ―Dorjander Kace to Zayne Carrick
During the Mandalorian Wars, a clandestine group of Jedi Masters were among the growing legions who defied the orders of the High Council and went to battle the Mandalorians under the command of Revan. Unlike the Revanchists, however, these rogue masters began covertly sabotaging the Republic war effort under the direction of the maverick ex-council member Dorjander Kace. Having come to believe that the Republic was corrupt beyond redemption, Kace and his followers embraced the Mandalorian way of life, coming to call themselves the Mandalorian Knights.
As a member of the Jedi High Council, Dorjander Kace became the highest ranking Jedi to openly pledge his support for Jedi intervention in the Mandalorian Wars. Unlike those who followed Revan, however, Kace believed that the Jedi were on the wrong side of the conflict and so swore allegiance to Mandalore the Ultimate along with a small number of like-minded volunteers.
- Star Wars: Knights of the Old Republic—War (First appearance)