Mr. Ruhle is the Principal of Walkerville Elementary. He once ran a bet with Ms. Frizzle on whether or not she could beat the light pinball machine she and Liz had built (Makes a Rainbow). He is an expert on chickens, owning a Rhode Island Red rooster named Giblets, who Dorothy Ann had accidentally lost in Cracks a Yolk.
In the original series, he was voiced by the late Paul Winfield. In Rides Again, he is voiced by Martin Roach.
Trivia
- His serious demanour, appearance, and voice sounds a lot like Professor Oglevee from The Parkers
| Staff | Ms. Frizzle | Fiona Frizzle* | Mr. Ruhle* | Garth Sinew* | Mr. McClean* |
|---|---|
| Students | Arnold Perlstein | Carlos Ramon | Dorothy Ann | Janet Perlstein** | Jyoti Kaur* | Keesha Franklin | Mikey Ramon** | |
| Animals | Liz |
| Vehicles | The Bus |
