Seán McLoughlin was a lonely kid in rural Ireland. Now, he’s Jacksepticeye, one of the world’s biggest YouTube stars. When he embarks on his first world tour, Seán contemplates his journey, his upbringing, and the nature of modern online celebrity and fandom as he meets the people across the world who changed his life and whose lives he’s changed with his videos and the community they’ve built.
| Actor | Role |
|---|---|
 Seán McLoughlinSelf | Self |
 Brent LilleySelf | Self |
| JJustin TraceySelf | Self |
| JJP HassenSelf | Self |
 Vernon ShawSelf | Self |
| MMalcolm McLoughlinSelf | Self |
 Arin HansonSelf | Self |
| FFlorrie McLoughlinSelf | Self |
| SSimon McLoughlinSelf | Self |
| SSusan McLoughlinSelf | Self |
 Alice TorkarSelf | Self |
| MMatt OttleySelf | Self |
| DDominik ProsserSelf | Self |
| MMartin SchützSelf | Self |
| SStella YoungSelf | Self |
 Ryan ReynoldsSelf (archive footage) | Self (archive footage) |
 Jack BlackSelf (archive footage) | Self (archive footage) |
 Karen GillanSelf (archive footage) | Self (archive footage) |
 Ethan NestorSelf (uncredited) | Self (uncredited) |
 Tucker PrescottSelf (uncredited) | Self (uncredited) |
| SSuzy BerhowSelf (uncredited) | Self (uncredited) |
 Brian WechtSelf (uncredited) | Self (uncredited) |
 Jaiden DittfachSelf (uncredited) | Self (uncredited) |