William Li is Wanda's younger brother. He is kind of mischievous. While he can walk and hardly talk, he's being potty trained, sleeps in a crib, and drinks from a bottle. He appears in "Ups and Downs", "Under Construction" and "Meets Molly Cule" (in Wanda's fantasy).
Relatives[]
Appearance[]
William has straight black hair similar to his sister.
In the original series, he wears a red T-shirt and blue shorts.
In Rides Again, William has changed his look, and now wears a yellow T-shirt, blue overalls and white and blue sneakers.
Episode Appearances[]
- "Ups and Downs" (first appearance)
- "Under Construction"
- "Meets Molly Cule" (in a fantasy)
- "The Magnetic Mambo"
- "The Tales Glaciers Tell" (cameo)
Trivia[]
- He gets noticeably older in The Magic School Bus Rides Again.
| Parents | Mr. Perlstein | Mrs. Perlstein | Mr. Hudson | Mrs. Hudson | Mr. Ramon | Mrs. Franklin | Mr. Terese | Dr. Tennelli | Mrs. Li |
|---|---|
| Siblings/Cousins | Murph* | Evan Hudson | |
| Friends | Professor Cornelia C. Contralto II* | R.U. Humerus* | Dr. Skeledon* | Molly Cule* | |
| Pets | Wanda's Dog* | Noodles |
| Other Characters | Mr. Seedplot* | The Baker* | Mr. Junkett* | Harry Herp* | Gerri Poveri** | |
| Li Family |
|---|
| Wanda • Mrs. Li • Henry • William • Bo |