Chief Sea Devil (The Sea Devils)

The Chief Sea Devil led the Sea Devils who had awoken in the 1970s.

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Like some of his people, the Chief Sea Devil slept for millenia and woke up in an unfamiliar world dominated by humans. The renegade Time Lord known as the Master persuaded the Chief Sea Devil to act against the human race to destroy it. The Third Doctor argued otherwise and offered to broker peace between the two species. The Chief agreed to this but the agreement was soon demolished when Walker, the politician in charge of the situation ordered Captain John Hart to launch an attack on the Sea Devils Base. Subsequently the Chief Sea Devil revoked his agreement with the Doctor and instead used the Master whom (with the Doctor's "assistance") constructed a device designed to wake the rest of the Sea Devils. The Doctor rigged the device to explode and destroy the Sea Devils' base. The Chief Sea Devil, along with all of the other Sea Devils died in the explosion. (DW: The Sea Devils)