| US Dub | Japanese Series (last name, first name) |
||
| Speed Racer | Mifune Go | 三船 剛 | |
| Pops Racer | Mifune Daisuke | 三船 大輔 | |
| Mom Racer | Mifune Aya | 三船 あや | |
| Rex Racer | Mifune Kenichi "Masked Racer" | 三船 賢一 | |
| Trixie | Shimura Michi | 志村 ミチ | |
| Sparky | Sabu | サブ | |
| Spritle | Mifune Kurio | 三船くりお | |
| Chim Chim | Sanpei | シンペイ | |
How they are used in the series:
G on Speed's Shirt: his Japanese name, Go.
M on Trixie's blouses: her Japanese name, Michi.
M on Speed's helmet and on the Mach 5: Japanese name of Pop's company, Mifune Motors.
Last modified: September 24, 1996