Season One
| The X-Men: |
| Kirby Morrow ... Scott Summers aka Cyclops |
| Venus Terzo ... Jean Grey |
| Neil Denis ... Evan Daniels aka Spyke |
| Scott McNeil ... Logan aka Wolverine |
| Kirsten Williamson ... Ororo Munroe aka Storm |
| Meghan Black ... Anna Marie aka Rogue |
| Maggie Blue O'Hara ... Katherine "Kitty" Pryde aka Shadowcat |
| Brad Swaile ... Kurt Wagner aka Nightcrawler |
| David Kaye ... Charles Xavier aka Professor X |
| The Brotherhood of Mutants: |
| Richard Cox ... Pietro Maximoff aka Quicksilver |
| Michael Dobson ... Fred Dukes aka Blob |
| Noel Fisher ... Todd Tolensky aka Toad |
| Christopher Gray ... Lance Alvers aka Avalanche |
| Colleen Wheeler ... Raven Darkholme aka Mystique |
| Others: |
| Michael Donovan ... Victor Creed aka Sabertooth |
| Christopher Judge ... Eric Magnus Lehnsherr aka Magneto |