

| Character: | Description: | Voiced By: |
| Ray Rocket |
Otto & Reggie's single father, veteran 60's surfer and proprietor of Rocket Power's hangout, The Shore Shack. |
John Kassir |
| Tito Makani |
Ray's best friend, Shore Shack chef and Rocket Power's Hawaiian sage, though his advice should be taken with a grain of salt. |
|
| Merv Stimpleton |
The Rocket's cantankorous next-door neighbor, who consider Otto & Reggie thorns in his side. |
Henry Gibson |
| Violet Stimpleton |
Merv's wife, who's caring and knowledgeable; a perfect substitute for Otto & Reggie's mother. |
Edie McClurg |
| Lars Rodriguez |
Twister's older brother, who calls the Rocket Power gang "Munchkins". Always picking on Twister. |
|
| Cleo Rodriguez | Twister's cousin, who likes to ice-skate. | |
| Sam's Mother | A single, divorced parent who's a little too cautious for her own good. | |
| Doug Dullard | Sam's father, who concentrates more on his work than him or his friends. | |
| Scottie | Twister's cousin. | |
| Conroy Blanc |
Owner of "Madtown", a local skating rink. Also is a teacher at the gang's school. |
|
| Mackenzie | A whiny brat that occasionally appears in the show. | |
| Tricia | Reggie's friends, and an expert surfer. | |
| Sherry | Another one of Reggie's friends. | |
| Oliver Van Rossen | One of Sam's friends. | |
| Eddie |
Frequently seen wearing a cape and a creepy mask, especially when he's on skates. Hangs out occasionally with the Rocket Power gang. |
|
| Officer Shirley |
A well-known, Black police officer; enforces the law very strictly,
especlially the curfew. |