Judoon

The Judoon were from the Doctor Who Universe. They were a race of rhinoform humanoids from the planet Judoonia, frequently employed as a mercenary police force. They were known to be brutish and single-minded in carrying out their tasks, without regard for unintended consequences of their actions.

Biology
Described as rhinoform bipeds, (AUDIO: Judoon in Chains) Judoon were two-metre high humanoids with stocky builds and rhinoceros-like heads. They had large lungs and could breathe even in environments with low levels of oxygen. They were resistant to even harsh physical assault, such as being hit with a marble statue. (TV: Smith and Jones) Judoon had yellow blood. (TV: Prisoner of the Judoon) They also had rather small brains; a Judoon brain was able to fit in a chest that could easily be held in a humanoid palm, or fit in a teaspoon. (WC: Prequel: A Good Man Goes to War, AUDIO: Judoon in Chains) The Judoon had canines, incisors, molars and pre-molars - the teeth of an omnivore, which meant they ate meat and vegetables. (WC: Teeth and Eating).

Culture
The Judoon were known for their strict obedience to the law and their brutal efforts in maintaining it. Crimes like physical assault towards a Judoon incurred the death penalty, without chance for trial. The Doctor described them as logical, but stupid, and they seemed to favour methodical patterns of behaviour to a fault. (TV: Smith and Jones) Even on crucial missions, Judoons would obey local laws and signs, including traffic laws and "Authorised personnel only" and "Pay and Display" signs. Similarly, they would follow mission procedure rigidly and always get a form signed when commandeering transport. The Judoon were trained to use all known forms of transit, albeit not very well in the case of cars. (TV: Prisoner of the Judoon) Their strict compliance with an established order even made them despise development even with their culture, and those who go out of their norms may be ostracised. (AUDIO: Judoon in Chains).

Their language was composed of many one-syllable words ending in a vowel, generally an "o" sound (such as "blo mo co jo") but occasionally an "a". Each sentence was composed of several of these words strung together. (TV: Smith and Jones, The Stolen Earth, PROSE: Judgement of the Judoon)

Although they did not laugh, Judoons would shake and make laughter-like noise when amused. (PROSE: Judgement of the Judoon)

A favourite sport among the Judoon was nukeball, but it was illegal on their planet to avoid the destruction of the population. (PROSE: The Coming of the Terraphiles) Judoon did not like opera. (COMIC: The Great Mordillo)

The Judoon had nothing to compare with poetry. (AUDIO: Judoon in Chains)

Technology
In general, Judoon technology was a dark red or black colour, and most instruments, such as their weapons, scanners and translators, were thick and pen-shaped, similar to a large sonic screwdriver. (TV: Smith and Jones)

Communication and scanning
The Judoon had scanners which would tell the Judoon the species of the scanned being. However, the scanners could be fooled by previous close contact with another species. Metamorphic beings capable of altering their internal biology using assimilated biomatter could also deceive the scan. They also were known to use a thick marker pen to mark "catalogued" people — those who had been scanned and deemed not to be a suspect — on their right hand.

The Judoon had translation devices which worked by analysing the recorded voice of a being. The translation was reciprocal. It also had a contact device that reached every Judoon helmet, allowing the Judoon Captain to give orders with a press of a button. (TV: Smith and Jones)

They used crime scene forensic scanners. The Seventh Doctor bought a second hand one from a retired Judoon. (AUDIO: The Blood Furnace)

Judoon Rocket
The Judoon rockets were large, cylindrical craft with four boosters and four claws at the bottom which served as landing gear. (TV: Smith and Jones)

Other transportation
The Judoon also had teleport technology. (PROSE: Judgement of the Judoon, TV: The Pandorica Opens, A Good Man Goes to War)

The Judoon were known to use an H2O scoop to transport buildings across space, and shield them with force fields as required by Galactic Law. (TV: Smith and Jones, AUDIO: Judoon in Chains)

Judoon operated various land vehicles to find lawbreakers, including motorbikes that hovered, tanks and tall, all-terrain machines with four legs. (COMIC: A Rare Gem)

Weaponry and armour
The "execution" punishment was delivered using a directed energy weapon with a red beam which could incinerate the target.

Judoon wore heavy black armour. (TV: Smith and Jones)

Other
In the 25th century, the Judoon were able to remotely lock down the communication and transport systems of spaceships. (PROSE: Judgement of the Judoon)

The Thirteenth Doctor considered Judoon chocolates to be of high quality. (PROSE: The Secret in Vault 13)