Fibuli

Mr. Fibuli was the Captain's assistant on Zanak.

Biography
Fibuli feared the Captain and so complied with his orders to the best of his ability. When the Fourth Doctor prevented Zanak from materializing around Earth, the bridge's controls exploded and Fibuli was killed. Despite their 'abrasive' relationship when he was alive, the Captain vowed to avenge him declaring that he was a good man. (DW: The Pirate Planet)