Muse

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You may be looking for the Muse.

The Muses were android priests on the planet Lyra. They enforced the rituals of the planet's religion.

Centuries after the population died out, the Muses continued to guard the temple and perform the required rituals. When Bernice Summerfield visited the temple, she was arrested by the Muses. (PROSE: Taken by the Muses)