Here's a list of all the talented people that contribute to characters' voices.
As you can see, 4Kids' working staff is fairly limited. Most voice actors have many, many roles in Pokemon, and it's hard to know who exactly does what because the credits don't specify the roles. Much of what is written here has been confirmed by Pokemon DVDs or shared by Maddie Blaustein on Pokemon fan forums. Starting with season nine, 4Kids stopped dubbing Pokemon and therefore many, but not all, of the voice actors were changed.
| Narrator | Ken Gates (Seasons 1-6; 9-); Mike Pollock (Seasons 6-8) |
| Ash Ketchum | Veronica Taylor (Seasons 1-8); Sarah Natochenny (Seasons 9-) |
| Pikachu | Ikue Ohtani(/Rachael Lillis in some early Kanto episodes) |
| Misty | Rachael Lillis (Seasons 1-8); Michelle Knotz (Seasons 9-) |
| Togepi | Satomi Koorogi |
| Brock | Eric Stuart (Seasons 1-8); Bill Rogers (Seasons 9-) |
| Jessie | Rachael Lillis (Seasons 1-8); Michelle Knotz (Seasons 9-) |
| James | Ted Lewis (Early Kanto); Eric Stuart (Seasons 1-8); Jimmy Zoppi (Seasons 9-) |
| Meowth | Matt Sussman (Early Kanto); Maddie Blaustein (Seasons 1-8); Jimmy Zoppy (Seasons 9-) |
| Giovanni | Ted Lewis |
| Butch | Eric Stuart (Seasons 1-8; Chronicles); Jimmy Zoppi (Seasons 9-) |
| Cassidy | Megan Hollingshead (Seasons 1-6); Andi Whaley (Pokemon Chronicles); Hilary Thomas (Seasons 9-) |
| Gary Oak | Jimmy Zoppi |
| Todd/Snap | Jimmy Zoppi |
| Richie | Tara Jayne |
| Tracey | Ted Lewis |
| Casey | Kerry Williams |
| Jimmy | Sean Schemmel |
| Marina | |
| Jackson/Vincent | |
| May | Veronica Taylor (Seasons 6-8); Michelle Knotz (Seasons 9-) |
| Max | Amy Birnbaum (Seasons 6-8); Kayzie Rogers (Seasons 9-) |
| Deliah Ketchum | Veronica Taylor (Seasons 1-8); Michelle Knotz (Seasons 9-) |
| Officer Jenny | Megan Hollingshead (Season 1-6); Jamie Davyous Owens (Seasons 6-8); Diane Stillwell (Seasons 9-) |
| Nurse Joy | Megan Hollingshead (Seasons 1-6); Bella Hudson (Seasons 6-8); Michelle Knotz (Seasons 9-) |
| Bill | Maddie Blaustein |
| Professor Samuel Oak | Stan Hart (Seasons 1-8); Jimmy Zoppi (Seasons 9-) |
| Professor Felina Ivy | Kayzie Rogers |
| Professor Elm |
| Professor Birch | Dan Green |
| Lt. Surge | Maddie Blaustein |
| Erika | Leah Applebaum |
| Sabrina | Lisa Ortiz |
| Koga | Ken Gates |
| Blaine | Ted Lewis |
| Lorelei/Prima | |
| Bruno | Maddie Blaustein |
| Lance | Wayne Grayson |
| Cissy | Tara Jayne |
| Danny | |
| Rudy | Matthew Mitler |
| Luana | |
| Drake | |
| Falkner | Matthew Mitler |
| Bugsy | Tara Jayne |
| Whitney | Megan Hollingshead |
| Morty | Andrew Rannells |
| Chuck | Dan Green |
| Jasmine | |
| Pryce | Jimmy Zoppi |
| Clair | Megan Hollingshead |
| Roxanne | Karen Neill |
| Brawly | Jason Griffith |
| Wattson | Dan Green |
| Flannery | Lisa Ortiz |
| Norman | Dan Green |
| Winona | Amy Birnbaum |
| Tate and Liza | Jason Griffith and Andi Whaley |
| Juan | Sean Schemmel |
