The Sable Order are very famed and feared for their ability and skill and are one of the things that make Grust one of the most militarily able countries on the continent. After Grust allied itself with Dolhr and Gra squadrons of the Sable Knights were used as King Jiol of Gra can be seen commanding one of those groups in the prologue in Fire Emblem: Shadow Dragon. They appear to be just as loyal to Grust as Camus is because none of them defected to the Archanean league.
It should be noted, that in the Japanese version, they are called "Black Knights". Sable is another term that can be used to describe a very dark grey. The change could possibly have been because of spacing issues and fitting the whole name "Black Knight" on the unit tags, or to avoid confusion with the other Black Knight. Of course, this is only speculation.
While Camus and Sternlin are the only identified members in Fire Emblem: Ankoku Ryū to Hikari no Tsurugi, several Sable knights are playable in the one of the stages of the SNES Satellaview title Fire Emblem: Archanea Saga and made a reappearance in Fire Emblem: Shin Monshō no Nazo ~Hikari to Kage no Eiyū~.
In the story Archanea Saga, the aforementioned four members of the Sable Order resign to help Camus deliver Nyna to safety in Aurelis without implicating the rest of the Order as the hostage Prince Yubello would be killed if Grust was thought to be traitorus. They would later appear again to help Marth's army near the Ice Dragon Temple. They are seemingly the only survivors of the Sable Order.
Hollstadt may be a member as he has several Sable knights around him, refers to Camus in his death quote, and has a black color scheme in his battle animations in the SNES version. However he may simply be a supporter of Camus from Grust.
- Camus - Leader of the Sable Knights and one of the Generals of Grust.
- Belf - One of the three Ex-Sable Knights that helped Camus protecting Nyna in Archanea Saga, later becomes leader of the Sable Knights in Camus's absence. Joins Marth to find Camus in Shin Monsho no Nazo, where he seems to discover the truth about "Sirius".
- Leiden - One of the three Ex-Sable Knights that helped Camus protecting Nyna in Archanea Saga, later joins Marth in Shin Monsho no Nazo
- Robert - One of the three Ex-Sable Knights that helped Camus protecting Nyna in Archanea Saga, and later joins Marth to search for Camus in Shin Monsho no Nazo.
- Sternlin (Non playable) - A commander of the Sable Order who was killed in action guarding the Fane of Raman during Shadow Dragon.