Park “Ruler” Jae-hyuk is Gen.G's bot laner and the Worlds 2017 champion — the first AD carry ever named finals MVP. He plays on a Logitech G305 with a Logitech G512 keyboard; his client DPI and slider values have never been published.
Ruler plays on a Logitech G305 with a Logitech G512 keyboard at 1920×1080, on the Gen.G roster that won the 2026 LCK title. His client DPI and slider values have not been published, so this profile leaves them blank rather than estimating. The G305 is a notably modest pick for a former Worlds finals MVP — a small, wireless, budget-tier shape rather than a flagship mouse.
Ruler has been at the top of the position for nine years across two leagues. He won Worlds in 2017 with Samsung Galaxy and took the finals MVP award — the first AD carry ever to do so — then spent five years at Gen.G before a two-season spell at JD Gaming in the LPL, where he won two domestic titles and MSI 2023. He returned to Gen.G in late 2024 and has won everything domestically since, including the 2026 LCK season as its finals MVP.

The 2026 LCK Grand Final MVP is the interesting entry: at 27, and on a roster full of younger stars, he was the player who decided the three games Gen.G needed after dropping the first.
Ruler's reputation is built on the late game. He is a hyper-carry in the classic sense — Jinx, Kai'Sa and Ezreal played for a scaling window rather than a laning win — and the mechanic that defines him is positioning in five-on-five fights, where he consistently puts out damage from angles that should not be safe. His weakness has never been mechanics; it has been the years when his team could not get him to a late game worth playing.
The generational comparison for Ruler is the other AD carries at Worlds 2026 — a mix of a Western veteran, a young prodigy and the man who took his seat at Gen.G.
Ruler is the only one of this group with a Worlds title, and the only one who has won domestic titles in two major regions. He is also the oldest — nine years on from his debut — which makes the 2026 finals MVP arguably the most impressive line on his résumé.
Ruler's public advice has consistently been about improvement over achievement — the habit of reviewing losses rather than accumulating wins.
He picked the name himself when he joined Samsung Galaxy, upgrading from the ID 'Bung' that he had used at Stardust in Challengers Korea. In Chinese-speaking communities it became '尺帝' — 'ruler emperor' — because the English word reads as both 'a measuring ruler' and 'one who rules', and the double meaning suited an AD carry who was already winning. The nickname has outlasted the reasoning behind it.
He left after the 2022 season to join JD Gaming in the LPL — his first time playing outside Korea. The move paid off immediately: he won the 2023 LPL Spring title and was named finals MVP, then took both the 2023 LPL Summer title and MSI 2023 with JDG. In late November 2024 Gen.G announced his return, and he has been their bot laner since.
The phrase exists because his best performances have come at the highest-stakes events rather than in the regular season. He won Worlds 2017 with Samsung Galaxy in Beijing and was named finals MVP — the first AD carry ever to take that award. He also holds five First All-Pro selections and has repeatedly carried Gen.G deep into international brackets, though a second World title has stayed out of reach.
The LCK season title — Gen.G beat Hanwha Life Esports 3-1 in the Grand Final — and he was named Finals MVP for his performance across the three decisive games. It was the organisation's sixth LCK title and its second in a row, and it sent Gen.G to Worlds 2026 as the No. 1 Korean seed. Earlier in 2026 he also won the LCK Cup.
Yes. He won gold with the Korean national team at the Hangzhou Asian Games in 2023, which under South Korean law also granted him alternative-service status in place of full military conscription. He played that tournament alongside Chovy, Faker, Zeus, Kanavi and Keria.
Only partial gear data is available: a Logitech G305 mouse and a Logitech G512 keyboard are on record, but no client DPI or slider values have been published in any settings sheet or event setup. This page leaves unverified fields blank rather than guessing, which is the standing rule for every profile in the ProAiming player database.
Every profile in the ProAiming player database is cross-checked against published setting sheets and event setups before it appears, and re-checked before each major event. Hardware, resolution and any client-slider values must come from a verifiable source; anything a player has never published is left blank rather than estimated. Where a value changes mid-season, the most recent verified figure is the one shown.