Caste of Slave Keepers
Here are relevant references from the Books where the Caste of Slave Keepers is mentioned.
While not specifically titled a Caste, this group is mentioned along with others that are.
It is not meant to be anything other than the facts of the matter.
Arrive at your own conclusions.
I wish you well,
And I myself, long ago thinking Cecily safer at the holding than she would be at the new encampment which I feared might be discovered and attacked, as had been the first encampment, had turned her over to the slave keepers, housing her with the others.
Rebels of Gor Book 33 Page 64
"Those selected will be washed, and placed in clean tunics before being bound and led to the palace," said the Ashigaru keeper.
Rebels of Gor Book 33 Page 183