Krogan

The krogan are a species of large reptilian bipeds native to the planet Tuchanka, a world known for its harsh environments, scarce resources, and overabundance of vicious predators. The krogan managed to not only survive on their unforgiving homeworld, but actually thrived in the extreme conditions. Unfortunately, as krogan society became more technologically advanced so did their weaponry.

Four thousand years ago, at the dawn of the krogan nuclear age, battles to claim the small pockets of territory capable of sustaining life escalated into full scale global war. Weapons of mass destruction were unleashed, transforming Tuchanka into a radioactive wasteland. The krogan were reduced to primitive warring clans struggling to survive a nuclear winter of their own creation...a state that continued until they were discovered by the salarians two thousand years later.

With the help of the salarians, the krogan were 'uplifted' into galactic society, and lent their numbers and military prowess to bring an end to the Rachni Wars (see below). Unfortunately, after the rachni were eradicated, the rapidly-expanding krogan became a threat to the galaxy in turn, forcing the turians to unleash the genophage. This genetic 'infection' all but sterilized the entire krogan species, meaning they will likely die out within a few generations.

Biology
Due to the brutality of their surroundings, natural selection has played a significant role in the evolution of the species. Unlike most species on the Citadel, krogan eyes are wide-set - on Earth this is distinctive of prey animals, but in this case it gives the krogan 240-degree vision, giving them greater visual acuity and awareness of approaching predators. Prior to the genophage, krogan could reproduce and mature at an astonishing rate; they could also produce hundreds of offspring at a time.

Their large shoulder humps store fluids and nutrients, enabling them to survive extended periods without food or water. A bigger shoulder hump is seen as a sign of high status, showing how successful an individual krogan is at hunting. Their thick hides are virtually impervious to cuts, scrapes or contusions, and they are highly resistant to toxins, radiation, and extreme heat and cold. Younger krogan have yellow or green markings on their hides. These markings darken to brown or tan over time, showing their age.

Biotic individuals are rare, though those who do possess the talent typically have strong abilities. The most amazing physiological feature of krogan biology is the multiple instances of major organs. These secondary systems are capable of serving as back-ups in the event of damage to the primary biological structures. (This also means, as Garrus Vakarian hints in conversation with Commander Shepard, male krogan have four testicles.) Having redundant systems makes krogan difficult to kill or incapacitate in normal combat scenarios. Krogan also have a secondary nervous system using a neuroconductive fluid, meaning they are almost impossible to paralyze. Sheer physical hardiness means an individual krogan can expect to live for centuries. Notably, Urdnot Wrex claims to have been born near the end of the Krogan Rebellions, making him at least 1400 years old.

Culture
The harsh krogan homeworld conditioned the krogan psychology for toughness just as it did the body. Krogan have always had a tendency to be selfish, unsympathetic, and blunt. They respect strength and self-reliance and are neither surprised nor offended by treachery. The weak and selfless do not live long. In their culture, 'looking out for number one' is simply a matter of course.

After their defeat in the Rebellions, the very concept of krogan leadership was discredited. Where a warlord could once command enough power to bring entire solar systems to heel and become Overlord, these days it is rare for a single leader to have more than 1000 warriors swear allegiance to him. Most krogan trust and serve no one but themselves.

This solitary attitude stems in part from a deep sense of fatalism and futility, a profound social effect of the genophage that caused krogan numbers to dwindle to a relative handful. Not only are they angry that the entire galaxy seems out to get them, the krogan are also generally pessimistic about their race's chances of survival. The surviving krogan see no point to building for the future; there will be no future. The krogan live with an attitude of 'kill, pillage, and be selfish, for tomorrow we die.'

Female krogan rarely leave their home worlds, focusing on breeding in an attempt to keep krogan numbers from declining too quickly. The few remaining fertile females who can carry young to term are treated as prizes of war, to be seized, bartered or fought over.

Krogan do not have strong religious beliefs, likely a result of evolving on a world where every day is a struggle for survival. The closest they come is to establish ritualistic burial grounds called the Hollows, where the skulls of their ancestors are displayed to remind them of "where we all come from, and where we all go". The Hollows are as sacred as any krogan place can be, and violence there is forbidden.

Military Doctrine
Traditional krogan tactics were built on attritional mass-unit warfare. Equipped with cheap, rugged gear, troop formations were powerful but inflexible. Command and control was very centralized; soldiers in the field who saw a target contacted their commanders behind the lines to arrange fire support.

Since the genophage, the krogan can no longer afford the casualties of the old horde attacks. The Battle Masters are a match for any ten soldiers of another species. To a Battle Master, killing is a science. They focus on developing clean, brute-force economy of motion that exploits their brutal strength to incapacitate enemies with a swift single blow of overwhelming power.

This change of focus from mass-unit warfare to maximal efficiency has increased employment demand in the fields of security and 'muscle for hire.' Due to the unsavory reputation of the krogan, most of these jobs are on the far side of the law.

Battle Masters are not 'spit and polish,' but they do believe in being well-armed and equipped, preferably with a gun for each limb. They are callous and brutal, but methodical and disciplined. They use any means at their disposal to achieve their goals, no matter how reprehensible. Hostage-taking and genocide are acceptable means to ensure a quiet occupation with few krogan casualties.

The krogan serving with Saren's forces appear to be returning to the old style of mass attritional combat. They also work in close cooperation with supporting geth units, who fill in the roles occupied by combat drones in other armies.

Biotics are rare among the krogan. Those that exist are viewed with suspicion and fear. The krogan see this aura of fear as a useful quality for an officer, and often promote them. Combat drones and other high-tech equipment are likewise in short supply.

The Rise and Fall of the Krogan
Roughly 2000 years ago the krogan were a primitive tribal species trapped on a world suffering through a nuclear winter of their own making. They were liberated from this state by the salarians, who "culturally uplifted" the krogan by giving them advanced technology and relocating them to a planet not cursed with lethal levels of radiation, toxins or deadly predators.

But the salarian intervention was not without an ulterior motive. At the time the Citadel was engaged in a prolonged galactic war with the rachni, a race of intelligent space-faring insects. The salarians hoped the krogan would join the Citadel forces as soldiers to stand against an otherwise unstoppable foe. The plan worked to perfection: within two generations the rapidly breeding krogan had the numbers to not only drive the advancing rachni back, but the ability to endure the harsh conditions of the rachni worlds. They were able to pursue them to their home worlds, find the rachni queens, and eradicate the entire species.

Saviors of the Galaxy
For a brief period the krogan were hailed as the saviors of the galaxy and were given not only the conquered rachni worlds but other planets in Citadel space to colonise, in gratitude for their help. But without the harsh conditions of Tuchanka to keep their numbers in check, their population exploded. Overcrowded and running out of resources, the krogan spread out to forcibly claim other worlds - worlds already inhabited by races loyal to the Citadel. There was always 'just one more world' needed. The final straw was when the krogan began settling the asari colony of Lusia. When the Council ordered them to leave, the krogan ambassador stormed out of the Chambers, daring the Citadel races to take their worlds back, and war broke out.

The so-called Krogan Rebellions continued for nearly three centuries. The krogan sustained massive casualties, but their incredible birth rate kept their population steadily increasing. Victory seemed inevitable. In desperation, the Council turned to the recently discovered Turian Empire for aid. The turians unleashed the genophage on the krogan home worlds: a terrifying bio-weapon engineered by the salarians. The genophage caused near total infant mortality in the krogan species, with only 1 birth in every 1000 producing live offspring.

The Genophage
No longer able to replenish their numbers, the krogan were forced to accept the turian terms of surrender. For their role in quelling the Krogan Rebellions the turians were rewarded with a seat on the Citadel Council. The krogan, on the other hand, still suffer from the incurable effects of the genophage.

Over the last millennium krogan numbers have steadily declined, leaving them a scattered and dying people. Some try bizarre treatments for the genophage, including testicle transplants. But, faced with the certainty of their extinction as a species, most krogan have become individualistic and completely self-interested. They typically serve as mercenaries for hire to the highest bidder, though many still resent and despise the Citadel races that condemned them to their tragic fate. Wrex comments disdainfully that clubs, bars and brothels often try to hire krogan bouncers, reducing his people to some kind of status symbol. Despite an announcement about failed, krogan-funded research into the genophage, which can be heard while on a Citadel elevator, most krogan have not worked toward a cure as they are more interested in combat than science.

Notable Krogan

 * Doctor Droyas
 * Inamorda
 * Jax
 * Moro
 * Shiagur
 * Skarr
 * Urdnot Wrex