Krogan Genophage

Lore & Background

Thousands of years before the Mass Effect trilogy, the Krogan nearly destroyed themselves in a global thermonuclear civil war over dwindling land on Tuchanka, turning their planet into a radioactive wasteland. Two thousand years prior to the original trilogy's events, the Salarians 'culturally uplifted' these primitive clans by providing faster-than-light technology and relocating them to new worlds to serve as soldiers against the Rachni. Within just two Krogan generations, they defeated the Rachni and committed genocide against the species. As a reward, the Council granted them former Rachni worlds and a monument on the Citadel. However, without natural predators or harsh environmental checks, their population exploded. They forcefully expanded into other systems, including a colony on the Asari world of Lusia, sparking the Krogan Rebellions. The Citadel Council deployed Spectres to contain them, but the high birth rate allowed the Krogan to persist. Facing an unwinnable war, Turian forces and Salarian scientists unleashed the Genophage, a biological weapon that caused near-total sterilization, leaving only 1 in 1000 births viable.

In Their Own Story

The narrative of the Krogan is defined by their tragic arc from galactic saviors to a species facing extinction. Major characters like Urdnot Wrex, Grunt, and Nakmor Drack embody this struggle for survival and redemption. The Genophage storyline spans most of the original Mass Effect trilogy and is referenced in Mass Effect: Andromeda. It serves as a central plot device that creates friction between alien species, particularly highlighting the complicated relationship between the Krogan and the Salarians. The writing team, including senior writer John Dombrow and Patrick Weekes, crafted this arc to explore moral complexity, portraying the Krogan not just as brutes but as victims of a calculated betrayal. Their journey involves navigating the guilt-ridden politics of the Salarian STG and the fractured clans of Tuchanka. The potential for a cure in Mass Effect 3 represents a pivotal turning point, forcing players to weigh the ethics of undoing a weapon that saved the galaxy against the rights of a dying species.

Reader's Guide

Understanding the Genophage requires examining its origins as a strategic necessity gone wrong. Developed by Salarian scientists and deployed by Turians during the Krogan Rebellions, it was intended to stop an aggressive expansionist phase triggered by an unchecked population boom. The weapon's effect is specific: it causes near-total sterilization with only 1 in 1000 births being viable. This statistic drives the entire cultural shift of the species, turning every birth into a miracle and every death a significant loss. For players engaging with this storyline, the Genophage acts as a catalyst for character development for figures like Urdnot Wrex and Mordin Solus. The decision to cure or maintain the Genophage in Mass Effect 3 is heavily influenced by the moral complexity praised by critics. This narrative thread challenges players to consider the long-term consequences of using biological warfare, as the Krogan's role shifts from the Citadel military's primary force to a shadow of their former prominence, dependent on the resolution of this centuries-old crisis.

Did You Know?

• The krogan's large back humps were a design compromise to fit their intimidating silhouette into human animation skeletons without breaking combat animations.
• Krogan eyes were originally designed on the sides of their heads like prey animals but were moved to the front to better reflect their predatory nature and improve conversation mechanics.
• Associate art director Matt Rhodes chose the wrinkle-faced bat as the primary inspiration for krogan faces because he felt they looked distinctly alien.
• The krogan's biological resilience includes four testicles in distinct sacks, multiple secondary and tertiary organs for backup, and a thick hide resistant to cuts and radiation.
• Major krogan characters include Urdnot Wrex, Grunt, Urdnot 'Eve' Bakara, Nakmor Drack, and Nakmor Kesh.

Origins and the Salarian Gambit

Thousands of years before the events of the Mass Effect trilogy, the krogan engaged in a global thermonuclear civil war over dwindling habitable land on Tuchanka. The sheer volume of nuclear weapons deployed created a nuclear winter, transforming their planet into a radioactive wasteland and reducing them to primitive, warring clans. Two thousand years before the original trilogy's timeline, the salarians intervened by 'culturally uplifting' these clans. Motivated by a desperate need for soldiers to combat the rachni, who were winning a war against the Council, the salarians provided faster-than-light technology and relocated the krogan to new habitable worlds rather than letting them discover it themselves. Within two krogan generations, the species not only defeated the rachni but pushed them back to their home world and committed genocide. As a reward, the krogan were awarded former rachni worlds and several planets in Citadel space, with their fallen honored by a monument on the Citadel.

The Krogan Rebellions and Genophage

The salarian gambit backfired as the krogan population exploded due to a lack of natural predators or harsh environmental constraints. Facing a crisis, they forcefully extended their dominion to other planets, including founding a colony on the asari world of Lusia. In response, the Council ordered the Spectres to strike at the krogan, who retaliated and sparked the Krogan Rebellions. The turians eventually joined the war against them. Because the krogan could persist due to their high birth rate, conventional warfare failed. Consequently, the turians deployed the genophage, a biological weapon developed by salarian scientists. This forced the krogan to accept surrender terms. Once hailed as saviors, they were replaced in the Citadel military by the turians and became a shadow of their former prominence. The genophage causes near-total sterilization, reducing viable births to 1 in 1000, driving the species toward slow extinction.

Visual Design and Artistic Constraints

Associate art director Matt Rhodes chose the wrinkle-faced bat as the basis for krogan faces to ensure they looked alien. The design team blended disparate animal designs, using the heavy skin of an Indian rhinoceros as a reference for their body texture to emphasize their battle-hardened nature. Originally, eyes were placed on the sides of the head, but modelers noted this was typical of prey animals; Rhodes agreed and moved them to the front to reflect their predatory nature and improve conversation animations. Technical limitations required fitting krogan models into human animation skeletons, which led to the deprecation of early large, apelike concepts. To maintain an intimidating image without breaking combat animations, developers increased the mass of the back area, resulting in their characteristic large humps.

Narrative Impact and Critical Reception

The krogan are central figures in a storyline spanning most of the original Mass Effect trilogy and referenced in Mass Effect: Andromeda. This narrative has received very positive critical reception, praised for its moral complexity and nuanced writing. It effectively serves as a plot device to create friction between alien species and develop characters like Urdnot Wrex, Grunt, Urdnot 'Eve' Bakara, Nakmor Drack, and Nakmor Kesh. The storyline explores themes of redemption and the consequences of the salarians' manipulation, influenced by the 1992 game Star Control II, specifically referencing the nuclear self-destruction of the Thraddash and the fast-breeding Shofixti. The krogan are available as playable characters in the multiplayer modes for Mass Effect 3 and Mass Effect: Andromeda.