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Wendell is a classmate of Bart Simpson in Mrs. Krabappel's fourth grade class. He is most seen playing with classmates such as Richard and Lewis. He is also good friends with Martin Prince, Jr. and helped him with his election as class president (one of the 2 votes for Martin) against Bart. He is considered one of the nerds of Springfield Elementary School along with Martin, Database and several others making him a constant and easy target of Nelson. Wendell was also one of the children who become stranded on the island with his fellow Model UN Club members. He is very often sick in class or in the hallways of Springfield Elementary and on the schoolbus especially with Otto driving. He once threw up on a bus ride after Bart patted him on the back, and another time he hurled after his school bus crashed off a bridge.
When the teachers at Springfield Elementary started eating students and passing their disappearances off as "permanent detention", Wendell was among the few survivors when the remaining students were all in one classroom. He was, however, given a detention and sent to the principal's office when his pencil slipped off his desk, thus sealing his fate.
 Behind the Laughter
Throughout the series, Wendell has been voiced by Jo Ann Harris, Pamela Hayden, Nancy Cartwright and Russi Taylor. This is due to the fact the he rarely speaks and thus has no specific voice actor. His most recent speaking appearance was in "Lost Verizon" (voiced by Russi Taylor) when Milhouse calls him on his cell phone.
Wendell did not appear white or speak until the episode "Homer's Odyssey".