the school mascot ("Butterfly and the Bog Beast"). Janet is so self-seeking that she usually tries to digress the class in some way to gain something for herself. She at first didn't believe Arnold's stories about his field trips until she went with the class and realized that the stories were real. She initially appeared in the book The Magic School Bus Lost in the Solar System, where it was stated she went to another school, but on the TV series, she attends a different class instead of a different school. Janet seems to be an only child, as Arnold mentions that she is his only cousin in "Butterfly and the Bog Beast." She appeared in eleven episodes: "Gets Lost In Space" "Butterfly and the Bog Beast" "Gets a Bright Idea" "Goes Upstream" "Works Out" "Gets Swamped" "Sees Stars" "Makes a Stink" "Pigs in the Wind" "Ralphie Strikes a Nerve" "Janet's Mystery Gene" The Hudson family Mrs. Hudson She appears in three episodes ("Going Batty," "Out of this World," and "Rocks and Rolls"). She also wears a ponytail compared to her daughter's pigtails. Voiced by Swoosie Kurtz. Mr. Hudson Makes speaking appearances in "Going Batty" and "Rocks and Rolls." Evan Hudson Dorothy Ann's little sister who appears in "Out of This World." The Li family Mrs. Li Wanda's Mother who first appears in "Going Batty", albeit to be in a speaking role. She has larger roles in "Ups and Downs" and "Under Construction", the latter of which she reveals that she is a science writer. She is also known to keep various reptiles around the house (such as an alligator in the bathtub and a Gila monster in the sandbox, according to Wanda). Voiced by Rosalind Chao in the original series and Lisa Yamanaka in Rides Again. William Li Wanda's baby brother. He appears in "Ups and Downs" and "Under Construction", and makes a brief appearance in "The Magnetic Mambo". Voiced by Lisa Yamanaka in both the original series and Rides Again. Henry Li Wanda's big brother. Appears in Ms. Frizzle's Adventures: Imperial China and implied to appear in the animated series in Meet the Class. Noted for his Ms. Frizzle-like hair. Others In Ms. Frizzle's Adventures: Imperial China, Wanda's grandmother and Mr. Li, Wanda's father, also appear. The Ramon family Mr. Ramon Like his son, he also likes to make jokes, which the other parents (much like their kids)