| Elliot Page ... Viktor Hargreeves |
| Tom Hopper ... Luther Hargreeves |
| David Castañeda ... Diego Hargreeves |
| Emmy Raver-Lampman ... Allison Hargreeves |
| Robert Sheehan ... Klaus Hargreeves |
| Aidan Gallagher ... Five Hargreeves |
| Justin H. Min ... Ben Hargreeves |
| Ritu Arya ... Lila Pitts |
| Colm Feore ... Sir Reginald Hargreeves |
