KSI: Can't Lose
Millions tuned in to see KSI beat Joe Weller in the biggest amateur boxing match of all time. But what didn't they see? The blood, sweat and determination underpinning KSI's intense training regime and a revealing look at his world off camera. This is the exclusive and never before seen story of Knowledge, Strength and Integrity, and how JJ, with 18m YouTube subscribers, went from actor to athlete.
| Actor | Role |
|---|---|
 JJ OlatunjiSelf | Self |
 Joe SuggSelf | Self |
 Simon MinterSelf | Self |
 Josh BradleySelf | Self |
 Vikram BarnSelf | Self |
 Ethan PayneSelf | Self |
 Tobi BrownSelf | Self |
 Harry LewisSelf | Self |
 Deji OlatunjiSelf | Self |
 Yinka OlatunjiSelf | Self |
 Jide OlatunjiSelf | Self |
 Jack WhitehallSelf | Self |
| CCallum AireySelf | Self |
| CCallum McGinleySelf | Self |
 KeemstarSelf | Self |
| IIsiah OcasioSelf | Self |
 Logan PaulSelf | Self |
| LLaurence MckennaSelf - Commentator | Self - Commentator |
| BBrian DavisSelf - Commentator | Self - Commentator |
| DDida AlsaffarSelf - KSI's Personal Trainer | Self - KSI's Personal Trainer |
 Viddal RileySelf - KSI's Boxing Trainer | Self - KSI's Boxing Trainer |
| MMax LeaSelf - Joe Weller's Fitness Coach | Self - Joe Weller's Fitness Coach |
| DDan CollinsSelf - Joe Weller's Boxing Trainer | Self - Joe Weller's Boxing Trainer |
| HHashim SaifuddinSelf - KSI's Physiotherapist | Self - KSI's Physiotherapist |
| SSarah SaundersSelf - KSI's Chef | Self - KSI's Chef |
| SSophie WhittamSelf - KSI's Robe & Shorts Designer | Self - KSI's Robe & Shorts Designer |
 Ali Loui Al-FakhriSelf | Self |