League of Legends Codexery

Zaun

An Undercity where innovation bursts through pollution and rebellion.

Zaun, known as the Undercity or the Sump, sits directly beneath Piltover’s gleaming spires. While the city above pushes for hextech refinement, Zaun feeds on desperation, reshaping waste into weapons and survival into art. The air here tastes of metal and chemicals, yet this place still births some of Runeterra's most dangerous and brilliant minds. The region exposes the true cost of unchecked industrialization in sharp contrast to its sister city. Locals innovate out of sheer necessity rather than ambition. From chem-fueled barons ruling the districts to rebels screaming for autonomy, Zaun wages a constant war against both gravity and oppression.

Location
Beneath Piltover
Status
Active
Key Innovation
Chemtech
Rival City
Piltover
Notable Factions
['Firelights', 'Chem-Barons']
Primary Resource
Hextech Scrap
Environment
Industrial, Toxic

Lore & Background

Historically, Zaun began as a collection of slums and waste disposal sites for the growing city of Piltover. As hextech crystals became the engine of progress above, their byproducts rained down below, poisoning the water and air of the lower districts. Over time, alchemists in the Undercity discovered ways to synthesize these toxins into potent substances known as chemtech, creating a black market economy that rivaled legitimate trade. The relationship between the two cities is symbiotic yet hostile. Piltover relies on Zaun for labor and raw processing, while Zaun depends on Piltover's waste for fuel and materials. This tension has led to frequent skirmishes, with Enforcers from above often clashing with local gangs below. The political landscape is fluid, dominated by powerful Chem-Barons who control the flow of chemicals and influence through fear. Despite the toxicity that permeates every street, Zaunites possess a fierce sense of community. Underground networks share resources, and resistance groups work to protect their neighborhoods from both external oppression and internal corruption. The city stands as a testament to human endurance, proving that life can flourish even in the most hostile environments created by progress.

In Their Own Story

The steam hissed violently as Kael adjusted the filter on his respirator, the green glow of chem-light reflecting off puddles of oily water. Above him, through a grate in the ceiling far above, he could see the faint, distant shimmer of Piltover's lanterns—lights that never reached this deep into the Sump. He gripped the wrench tight; another leak meant more waste falling down, and more work for men like him to clean it up before it poisoned the wells. In Zaun, every breath was a bargain, but he wouldn't leave his home until the pipes were sealed.

Reader's Guide

Zaun sprawls vertically beneath the gleaming streets of Piltover, a labyrinth of steam vents and repurposed machinery. Geography is defined by depth; the lower levels are darker, more toxic, while upper districts cling to the edge of the light above. Culture thrives on adaptation, turning hextech refuse into survival tools or dangerous chemtech enhancements. Politics remain fractured between independent Chem-Barons who control trade routes and underground resistance groups like the Firelights seeking freedom from oppression. Key inhabitants shape this narrative through action rather than decree. Enforcers patrol the borders, often clashing with local gangs. Champions such as Vi and Jinx embody the region's volatile duality of protection and chaos, while figures like Ekko represent hope for a future beyond the smog. The chemist Singed operates in shadows, pushing biological boundaries regardless of morality. Ultimately, Zaun is a testament to resilience, where every breath costs something, yet innovation burns brightest in the darkest corners.

Did You Know?

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