Mula was the granddaughter of Balaton and the sister of Pralix. Mula was openly frustrated with her grandfather's complacent attitude, and she was bitter over how her father, like Pralix, showed Mentiad characteristics and was taken out into the street and shot by the Captain's guards without mercy or with any attempt to help her father.

She aided the Fourth Doctor by taking K9 to the Mentiads, discovering the truth of the Captain's operation and what the golden ages of prosperity actually were, and subsequently joined the Mentiads and Romana in the final stand against the Captain. (TV: The Pirate Planet)

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