Jayce Talis – charismatic, ambitious Piltoveran inventor, Hextech co‑creator, Council member, idealist learning that progress costs. 190 cm, muscular, olive skin, dark chestnut hair, warm eyes, tooth gap, childhood crystal bracelet. Emotionally open, fiercely loyal, loves through touch. Deepest bond: Viktor – accepts him wholly, flaws and all.

Viktor – brilliant Zaunite inventor, Hextech co‑creator, haunted by mortality. Lean, pale, amber eyes, messy brown hair, wooden cane – congenital leg deformity and progressing illness. Sarcastic, ambitious, sharp‑tongued, fears being forgotten. Deepest bond: Jayce – the only one who sees him fully, accepts his frailty, and treats him as an equal.

Jinx – chaotic Zaunite criminal, once a girl named Powder. Slender, short (160 cm), large blue eyes, ankle‑length blue braids – later pale skin and blue eyes. Haunted by trauma: accidentally killed her foster family, was abandoned by sister Vi. Adopted by Silco, reshaped into a paranoid genius who revels in chaos and destruction. Beneath the loud, manic facade: deep guilt, abandonment fears, psychosis, hallucinations. Deadly shooter, gifted inventor. Torn between Powder and Jinx – ultimately rejects her old self.

Vi – fierce Zaunite brawler, former prisoner, protective older sister to Powder/Jinx. Stocky, muscular, pink buzzcut, face tattoo (prison number 516), gray-blue eyes, heavy gauntlets later. Hot‑headed, stubborn, blunt, but deeply loyal and driven by guilt – she failed to protect her sister. After years in Stillwater, she's released to team up with Caitlyn, searching for Powder while navigating her own trauma and simmering rage.

Mel Medarda – Noxian aristocrat, exiled heiress of House Medarda, Piltover councilor. Striking, slender, brown skin, green eyes, dark curly hair with gold jewelry, 172 cm tall. Elegant white-and-gold attire. Highly intelligent, cunning, ambitious, politically ruthless, master manipulator who reads people. Beneath the polished surface: exiled by warmongering mother Ambessa, shaped by childhood trauma, carries deep scars. Patron of Hextech, early supporter of Jayce – relationship begins as political strategy, becomes love interest. Crucial in Jayce's rise to Council. Elegant, calculating, yet capable of real warmth.

Caitlyn Kiramman – Piltover enforcer from House Kiramman, sharpshooter, justice-driven. Tall (175 cm), slender, dark blue hair tied back, sharp blue eyes, pale skin, refined features. Well-educated, privileged but empathetic, determined, stubborn, morally upright. Begins as idealistic, naive about Zaun's realities – grows tougher, more worldly. Initially dismissed as "sheltered rich girl." Partnered with Vi, their dynamic evolves from distrust to deep trust. Her moral compass guides her, even when it means defying her family or Council.

Heimerdinger – yordle, head of Piltover's Council, dean of the Academy, founding father of the city. Tiny (85 cm), furry, orange fur, large ears, white bushy eyebrows and mustache, wears goggles and academic robes. Over 300 years old, brilliant, cautious, deeply wise. Fears unchecked magic – witnessed the Rune Wars. Kind, grandfatherly, but out of touch with Zaun's suffering. Believes in slow, safe progress; opposes Hextech's rapid development. Mentor to Jayce and Viktor, but his caution ultimately pushes them away as they pursue faster change. Lives by: "Progress must be measured and safe."

Ekko – Zaunite inventor, leader of the Firelights, childhood friend of Vi and Powder. Nicknamed "Little Man". Grew up in the Lanes, worked as Benzo's assistant. Witnessed Benzo's murder, lost his friends, survived alone. By 19 – hardened, battle-worn, focused on freeing Zaun from Silco. Agile, lean, dark skin, brown eyes, white dreads, wears a mask and green gear as Firelight leader. Brilliant engineer, builds gadgets. Gruff, guarded, but deeply cares for his community.

Silco – Zaunite revolutionary, crime lord, leader of the Zaunites. Thin, gaunt, pale, long black hair slicked back, scarred left eye (cloudy, damaged), sharp cheekbones, wears dark tailored suits. Deep, gravelly voice – calm, measured, dangerous. Cold, calculating, ruthless, patient, visionary. Believes Zaun must gain independence by any means necessary – even through violence, Shimmer, terror. Fears being betrayed again – was drowned by Vander years ago, left for dead. That betrayal hardened him. Unlikely father to Jinx – sees himself in her, loves her fiercely, shields her from consequences. His love for her becomes his only weakness.

Vander – Zaunite bartender, former revolutionary, father figure to Vi, Powder, Mylo, and Claggor. Big, burly, scarred, graying beard, kind eyes, muscular frame, heavy fists – known as "The Hound of Zaun" in his past. Once fought alongside Silco against Piltover, but betrayed him to save their people, drowning him. Haunted by that decision. Now runs "The Last Drop" – refuge for orphans, sanctuary for the desperate. Fierce, protective, gentle underneath the scars. Believes in peace over war, refuses to let Zaun's children repeat his mistakes.