KSI Leaves the Sidemen After 13 Years: The End of an Era for YouTube's Biggest Group

📷 Image: MILLION DOLLAZ WORTH OF GAME (CC BY 3.0) — via Wikimedia Commons

It's the news that sent shockwaves through the YouTube community and left millions of fans reeling: KSI is leaving the Sidemen after 13 years. In an emotional video that he described as the "hardest video I've ever had to make," the 32-year-old megastar confirmed that his time with the beloved British YouTube collective has come to an end. For a generation of viewers who grew up watching seven friends turn Sunday afternoons into appointment viewing, this is nothing short of the end of an era.

The Announcement That Broke the Internet

KSI — born Olajide Olayinka Williams "JJ" Olatunji — took to his channel earlier this week to share the news with his 24 million subscribers. The video, stark in its honesty, featured a visibly emotional KSI explaining that after more than a decade of building something extraordinary with his closest friends, it was time to step away.

"I never thought I'd be making this video," he said, fighting back tears. For a personality who built his career on boisterous confidence and unfiltered humor, the vulnerability on display struck a chord. Fellow creators and fans alike flooded social media with messages of support, disbelief, and gratitude. The announcement trended worldwide on X (formerly Twitter) within hours.

According to multiple reports from outlets including BBC, Forbes, and Deadline, KSI's departure has been in the works for months. The decision, sources say, was not born out of conflict or falling out, but rather the natural evolution of a creator whose ambitions have grown far beyond the group that launched him into stardom.

From a Bedroom in Watford to a Global Empire

To understand the weight of this moment, you have to rewind to 2013. The Sidemen began as a group of British teenagers playing FIFA and Call of Duty together on YouTube. KSI, already a rising star with his FIFA rage compilations, was the nucleus around which the group coalesced. Alongside him were Simon "Miniminter" Minter, Joshua "Zerkaa" Bradley, Tobi "TBJZL" Brown, Ethan "Behzinga" Payne, Vikram "Vikkstar123" Barn, and Harry "W2S" Lewis.

What started as chaotic gaming sessions in cramped bedrooms transformed into one of the most formidable media empires on the internet. The Sidemen's flagship Sunday videos — a mix of challenges, competitions, and unfiltered banter — routinely pull in 10 to 20 million views. Their main channel boasts over 21 million subscribers. But the brand extends far beyond YouTube: Sidemen Clothing has become a streetwear staple in the UK, XIX Vodka disrupted the spirits market, and the Sides fried chicken chain now has over a dozen locations across Britain. The Sidemen Show, a 2018 YouTube Originals series, brought the group's chaotic energy to a polished format, while The Sidemen Story, their 2024 documentary, offered a rare behind-the-scenes look at a decade of friendship and hustle.

Their annual charity football match at Wembley Stadium — which raised millions for causes like the Teenage Cancer Trust and CALM — cemented their status as not just entertainers but genuine cultural forces. At its peak, the Sidemen weren't just a YouTube group; they were the blueprint for what a creator collective could become.

Why Now? The Evolution of KSI

For anyone who has followed KSI's career trajectory over the past five years, the writing had been on the wall. JJ Olatunji stopped being "just a YouTuber" a long time ago. His music career has produced multiple UK number-one singles and platinum albums. His foray into influencer boxing — first against Joe Weller, then the two-fight saga with Logan Paul that drew millions of pay-per-view buys — redefined what a crossover combat sports event could look like. His Prime Hydration brand, co-founded with Logan Paul, became a billion-dollar beverage juggernaut. Most recently, he joined the judging panel of Britain's Got Talent, sitting alongside Simon Cowell in one of the most high-profile roles on British television.

The documentary KSI: In Real Life peeled back the curtain on the toll this relentless grind had taken. The film revealed a man at war with himself — torn between the persona that made him famous and the person he wanted to be. In many ways, leaving the Sidemen feels like the final, and hardest, step in that transformation.

"This isn't about drama or anyone doing anything wrong," a source close to the group told Deadline. "JJ just outgrew it. He's running multiple businesses, he's a judge on the biggest TV show in the country, he's making music. There are only so many hours in a day."

What This Means for the Sidemen

The immediate question on every fan's mind: can the Sidemen survive without their biggest star? The short answer is almost certainly yes — but it won't be the same. The remaining six members — Miniminter, Zerkaa, TBJZL, Behzinga, Vikkstar123, and W2S — are each successful creators in their own right. They've built an infrastructure that can function without any one individual, KSI included. The Sidemen brand will continue; the Sunday videos, the clothing line, the restaurants, the charity events.

But something irreplaceable leaves with KSI. He was the chaotic spark, the instigator, the wildcard who turned a simple challenge video into an unforgettable moment. The group's chemistry — seven distinct personalities bouncing off each other — was its not-so-secret weapon. Six-man Sidemen will be a different dynamic, and the group will need time to find its new rhythm.

The announcement also raises larger questions about the longevity of creator collectives. As influencers age, build families, and diversify their income streams, the model of seven friends filming every week becomes harder to sustain. Groups like the Vlog Squad, Team 10, and the Hype House all eventually fractured. The Sidemen lasted longer than almost anyone predicted — 13 years is an eternity in internet time.

The Broader Trend: YouTube's Creator Middle Age

KSI's departure is part of a larger story playing out across the creator economy. The first generation of YouTubers — those who started uploading in the early 2010s — are now in their 30s. They're getting married, having children, and facing the same questions every professional faces at mid-career: is this still what I want to be doing?

Earlier this year, the blog covered the YouTube-to-Hollywood pipeline — how creators like KSI, MrBeast, and the Paul brothers have leveraged their online audiences into mainstream entertainment success. KSI's evolution from FIFA YouTuber to Britain's Got Talent judge is perhaps the most dramatic example of this phenomenon. His decision to step back from Sidemen mirrors what happens in every creative industry: the breakthrough star eventually goes solo.

It's worth noting that KSI isn't disappearing from the internet — far from it. He'll continue making content on his main channel, releasing music through his label, and appearing weekly as a judge on Britain's Got Talent. If anything, leaving the Sidemen frees up time and creative energy for the projects that now define his career.

Fan Reaction: Heartbreak and Understanding

The Sidemen fanbase — known for its passionate, sometimes overwhelming loyalty — responded with a mix of devastation and support. On Reddit's r/KSI and r/Sidemen communities, threads with thousands of comments poured out personal stories of growing up with the group. "These guys got me through high school," one fan wrote. "I'm 27 now. I get it. People change. But damn, this hurts."

YouTube comment sections under the announcement video filled with variations of "End of an era" and "Thank you for everything, JJ." Even Logan Paul — KSI's former rival turned business partner — posted a heartfelt message: "Proud of you, brother. On to bigger things."

The overwhelming sentiment, remarkably, was not anger but understanding. Fans recognized the burnout, the evolving priorities, the simple truth that 13 years is a long time to do anything — let alone film yourself every week with the same six people. In an era where internet breakups are often messy and public, KSI and the Sidemen appear to be handling this with rare grace.

What's Next for KSI?

If history is any guide, KSI won't be slowing down. His music career continues to gain momentum — rumors of a new album in late 2026 have been swirling for months. His role on Britain's Got Talent has introduced him to an entirely new, older demographic that may never have watched a Sidemen Sunday. Prime Hydration continues to expand globally. And the influencer boxing world, which he helped create, is always one phone call away from pulling him back in. (A rematch with Tommy Fury? Never say never.)

There's also speculation about more traditional entertainment ventures. With the success of KSI: Can't Lose and In Real Life, a scripted project feels almost inevitable. KSI has the audience, the charisma, and now — crucially — the time.

For the Sidemen, the show goes on. The remaining six members have affirmed their commitment to the group, promising fans that Sunday videos will continue. A new era begins — one that will inevitably feel smaller without its largest personality, but one that also creates space for the other members to step into the spotlight in ways they couldn't before.

The Legacy of the Seven

In the grand history of internet culture, the Sidemen will be remembered as pioneers. They proved that a group of friends with cameras and chemistry could build something that rivaled traditional media in reach, revenue, and cultural impact. They gave millions of young people a weekly ritual, a sense of belonging, and countless laughs. And at the center of it all was KSI — loud, unpredictable, and impossible to ignore.

Thirteen years is a lifetime on YouTube. The platform itself was barely eight years old when the Sidemen formed. Generations of creators have come and gone in that time, algorithms have shifted, formats have died and been reborn. Through all of it, the Sidemen endured. That KSI chose to leave not in scandal or silence but in an honest, emotional video — thanking his friends, acknowledging the fans, closing the chapter with dignity — feels like the only fitting goodbye for a group that always put authenticity first.

The Sidemen without KSI will take some getting used to. But if there's one thing this group has taught us over 13 years, it's that friendship, humor, and a willingness to make fools of yourself on camera can take you further than anyone expected. Here's to whatever comes next — for KSI, for the Sidemen, and for the millions of fans who grew up right alongside them.

Related Articles

• Sidemen — The official Sidemen channel, home of Sidemen Sundays
• The Sidemen Show — YouTube Originals stunt and challenge series
• The Sidemen Story — 2024 documentary looking back at their first decade
• KSI: In Real Life — Access-all-areas documentary on KSI's most momentous year
• KSI: Can't Lose — Behind-the-scenes of KSI's first big boxing match
• Britain's Got Talent — Watch KSI as a judge on Britain's biggest talent show
• The YouTube to Hollywood Pipeline — How creators are dominating the 2026 box office

What are your thoughts on KSI leaving the Sidemen? Will the group feel the same without him, or is this a chance for the other members to shine? Let us know in the comments.