Badger pirate

Human Badgers were life forms artificially created by Humans. They would later often find work as mercenaries or pirates.

Biology
The Human Badgers were made from the DNA of badgers and Humans. They were humanoid in appearance, but with muscular bodies, badger-like heads and furry bodies. Human Badgers were grown in test-tubes. (NSA: The Pirate Loop)

Culture
Human Badgers tended to have the culture of Humans, since they were generally used as slaves and servants.

The Badgers of the Mandelbrot Sett had exaggerated pirate-persona. They wore golden earing, spoke with stereotypical pirate accents and wore skulls and cross-bones. The golden earing was worn to pay for their own funeral. They resolved issues with duels. (NSA: The Pirate Loop)

Technology
The Badgers were armed with guns that engulfed their target in pink light before making them vanish. The badger force was carried around space in a huge mothership. When they neared their target the badgers would all be released in small pods that would smash against the hull of the targeted ship. The Badgers would then force an entry. (NSA: The Pirate Loop)

History
The Human Badgers were created after the extinction of the European badger. They were generally employed as hired thugs and mercenaries.

The Mandelbrot Sett, a ship of pirate Badgers, was sent to attack the Brilliant in the 40th century and try to get its experimental drive. When they attacked the ship, it activated the drive, causing the ship to be stuck in time. Three pirates, Dashiel, Jocelyn and Archibald, were able to get on-board before the drive was activated. Because of an incomplete time loop, they were unable to permanently kill anyone and began to learn about the finer things in life. Eventually, they almost became friends of the crew.

Eventually, the other ships made it through the time loop and attacked the ship, killing the passengers, taking the crew back to the Mandelbrot Sett and then destroying the Brilliant. When the Tenth Doctor tried to convince them to give up their mission, they killed in. In reality, the Brilliant's engine had been hooked to the TARDIS and the time loop had been extended to include the Mandelbrot Sett, meaning everyone was brought back to life. Seeing that fighting would be useless and having been told of life on the Brilliant, the pirates left the Mandelbrot Sett for the Brilliant. With the time loop repaired, they were allowed to party on the Brilliant forever. (NSA: The Pirate Loop)