don't appear to enjoy. He appears in "Going Batty." Mrs. Ramon isn't mentioned in the show. Voiced by Edward James Olmos. Mikey Ramon Carlos' younger, paraplegic brother who is a mechanical and computer whiz. Presumably not much younger than Carlos, the brothers seem close. Carlos calls him when the class needs help with something mechanical. He appears in "Getting Energized" and "Gets Programmed." Voiced by Kevin Zegers in the original series and an unidentified voice actor in Rides Again. John Seen in the first books of the magic school bus series. He looks uncannily similar to Carlos, making him a possible brother. The Wright family Tim's father and mother They appeared in "Going Batty", but did not speak (outside of joining the other parents in scolding Carlos' father). Tim's grandfather He owns an apiary outside of Walkerville. The Franklins, Tennellis, Tereses, Perlsteins, and Kaurs Mrs. Lita Franklin Keesha's grandmother who appeared in "Going Batty," when Walkerville Elementary had its annual parent-teacher conference during the night. Keesha's parents are never seen or mentioned, so it is possible that Keesha's grandmother is her guardian. Voiced by Eartha Kitt. Dr. Alice Tennelli Ralphie's mother, who is a physician. Voiced by Tyne Daly. She appeared in twelve episodes: "Inside Ralphie" "Going Batty" "Rocks and Rolls" "A New Friend" "The Law of Unintended Consequences" "Backgrounds" "Red-Headed Lefties with Nut Allergies" "Under Cover of Darkness" "A Night at Ralphie's" "The Championships" "Raging Bull" "Baseball Cards" She is mentioned in six episodes: "Ups and Downs" "Tornadoes vs. Butterflies" "Sick Day" "Frizzle of the Future" "The Magnetic Mambo" "Kids in Space" Mr. Dave Tennelli Ralphie's father, who is a chef. Voiced by Ross Bagdasarian Jr. When Ralphie likes anchovies on his pizza. He appeared in four episodes: "A New Friend" "Backgrounds" "Raging Bull" "Baseball Cards" He is mentioned in two episodes: "Gets Eaten" "The Good, the Bad, and the Gnocchi" Robert "Robbie" Tennelli Ralphie's stepbrother, who is a football player. Voiced by Thomas Dekker. He only appeared in one episode: "Under Cover of Darkness" He is only mentioned in one episode: "Red-Headed Lefties with Nut Allergies" Nicholas "Nick" Tennelli Ralphie's younger brother, who is a basketball player. He is voiced by Erik Per Sullivan. He appeared in two episodes: "Tornadoes vs. Butterflies" "The Championships" He is mentioned in two episodes: "The Law of Unintended Consequences" "A Night at Ralphie's" Grandpa Levato Tennelli Ralphie's grandfather, who is a house.