Lauri “Cyanide” Happonen, former Fnatic jungler and 2011 League of Legends World Champion, has died at 31. Remembering his esports legacy, championship career, and tributes from teammates. The esports community is mourning Lauri “Cyanide” Happonen, the Finnish professional League of Legends player who helped Fnatic win the game’s inaugural World Championship in 2011. News of his death was reported on October 26, 2026, with Finnish newspaper Ilta-Sanomat reporting confirmation from Finland’s Digital and Population Data Services Agency. Happonen was 31. According to published reports, Happonen died on July 31, 2026, although the news became public months later. His cause of death has not been disclosed, and no circumstances should be assumed without an official statement. His passing has prompted tributes from former teammates, esports organizations, and fans who remember his role in the early years of competitive League of Legends. Cyanide’s Historic 2011 League of Legends World Championship Happonen became a defining figure in early European esports as Fnatic’s jungler. In 2011, he helped the team win the first League of Legends World Championship at just 16 years old, becoming the youngest player to win the title, according to reports. He continued competing with Fnatic during the organization’s rise in Europe. The team reached the World Championship semifinals in 2013 and won three European league titles across 2013 and 2014. His contribution helped establish Fnatic as one of the prominent names in the game’s developing professional scene. Former Fnatic Teammates Share Heartfelt Tributes Following the announcement, former teammate Bora “YellOwStaR” Kim paid tribute to Happonen, describing him as one of the kindest and most genuine people he had known. He reflected on their years together as teammates and friends, emphasizing that their relationship extended far beyond competitive gaming. YellOwStaR also recalled seeing Happonen at a League of Legends showmatch in July 2026, shortly before his reported death. He remembered him as someone who still had dreams, plans, and projects for the future. Fnatic also expressed sadness over his passing and recognized the lasting mark he made during his time with the organization. Cyanide’s Legacy in Competitive League of Legends Happonen eventually stepped away from Fnatic and later retired from competitive play, having helped shape the early history of European League of Legends. His achievements, particularly the 2011 world title, secured his place among the game’s notable early champions. His death also marks another loss for Fnatic’s championship-winning 2011 roster. Maciej “Shushei” Ratuszniak, another member of that team, died in April 2025 at age 36. Lauri “Cyanide” Happonen: Obituary and Cause of Death Full name: Lauri Happonen Known as: Cyanide Age: 31 Nationality: Finnish Profession: Former professional League of Legends player Team: Fnatic Major achievement: Won the inaugural League of Legends World Championship in 2011 Reported date of death: July 31, 2026 Cause of death: Not publicly disclosed in the cited report Rest in Peace, Cyanide Lauri “Cyanide” Happonen will be remembered for his championship achievement, his contribution to early competitive League of Legends, and the friendships he built throughout his career. The tributes from former teammates reflect the personal impact he had beyond the game itself. Heartfelt condolences go to his family, friends, former teammates, and fans mourning his loss. His legacy will remain part of League of Legends history. Verification note: The death and career details above are supported by news reports published on October 26, 2026. The cause of death has not been publicly disclosed in the cited reporting. Share this... Facebook Pinterest Twitter Linkedin Threads Post navigation Tyler James Petee Obituary: Brownstown, Michigan, Mourns Beloved Father and Youth Hockey Coach, Age 37 Fernando Estrada Torrero Obituary: Lafayette, California, Mourns 29-Year-Old Remembered for Lasting Bonds