Unidentified actors
This character appears to be either the
Brother or best friend of Prince Daikor.
As far as I could tell he is never called by name. I would guess this is probably the role played by the unidentified Giuseppe Monteverdi. Monteverdi has several stunt credits and of the roles that look credit-worthy he is the only one who appears like he could be a stuntman.
Slave girl who gives advice to Soraya
Having decided that she is definitely not Tanya Lopert, we are thinking that she is probably Nadine Verdier (credited as "Nadim"), who is identified in images on the Aveleyman site.
Akrim's dancing girl
By process of deduction she is probably the credited actress "Malika".
Harem keeper
The only remaining male speaking role, outside of a few of the bidders at the slave auction (all but one of whom are uncredited).
Stunt double for Kirk Morris as Anthar