Knee started playing Tekken with the first iteration of the series, when he was in elementary school. While growing up he continued to hone his skills, spending much of his free time playing Tekken at different Korean arcades.
By prioritizing fun over being a specialist, Knee developed a vast character knowledge over the years, eventually becoming known for utilizing all kinds of characters in high level play. Throughout his career he has shown full mastery over a plenitude of characters, such as Bryan, Devil Jin, Dragunov, Bruce, Paul, Steve, Hwoarang, Kazuya, Miguel, Jin, Heihachi, Shaheen, Josie and Lili. Knee is considered by many to be the greatest Tekken player of all time.
In the Tekken World Tour Knee had a relatively quiet first season in 2017, only winning a Challenger event at Abuget Cup and in a shock upset, lost all of his Group Stage games at the Finals, with losses to Nobi, Saint and Jimmyjtran. However the 2018 season would be a complete return to form for the Korean, winning a grand total of five Master events en route to the Finals once again, eventually finishing 3rd overall after being eliminated by eventual winner Rangchu.
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vs. Awais Honey
vs. Arslan Ash
vs. Arslan Ash
- The name Knee came from his time playing Tekken Tag Tournament; He used Bryan and Bruce as tag partners, characters that have many skills utilizing their knees.
- Tekken became his main game because it was the most popular game at Korean arcades when he was growing up.
- Knee got to high level play during Tekken 4, and started playing professionally with Tekken 5.
Tekken Tag Tournament 2
- Evo Japan 2018 : ROX Knee vs ROX Chanel - Grand Finals
- Echo Fox JDCR vs. ROX Knee - Final Round 2018 - Grand Finals
- ROX Knee vs. EchoFox Saint - Battle Arena Melbourne 10 - Grand Finals
- ROX Knee vs UYU JeonDDing - Combo Breaker 2018 - Grand Finals
- UYU Qudans vs. ROX Knee - Fighting Games Challenge 2018 - Grand Finals
- ROX Chanel vs. ROX Knee - The Mixup 2018 - Grand Finals
- RAD RB Anakin vs. Rox Dragons Knee - Combo Breaker 2019 - Grand Finals
- UYU LowHigh vs. Rox Dragons Knee - VSFighting 2019 - Grand Finals