You may be looking for one of several individual viziers.

A vizier was a high-ranking advisor to a monarchy in some Eastern cultures. The Doctor encountered several viziers, both on and off Earth.

In the 9th century, the Fifth Doctor encountered the Sudanese vizier. (AUDIO: The Destroyer of Delights)

In 1289, the First Doctor encountered Kublai Khan's vizier at Khan's palace. (TV: Marco Polo)

While in Paris in 1626, Erimem told King Louis XIII that the Fifth Doctor was her vizier. (AUDIO: The Church and the Crown)

The Third Doctor encountered the Sclaponian Grand Vizier. (PROSE: Island of Death)

The Eighth Doctor encountered the glass Vizier of Fortalice. (PROSE: The Scarlet Empress)

In 2593, Bernice Summerfield encountered an individual who called himself the Vizier, whilst on Perfecton. (PROSE: Oh No It Isn't!)

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