Charlie (voiced by Crystal Scales) is a boy who looks slightly similar to Sanjay, with dark hair and a red shirt. He often wins what Nancy should have won.

In one episode, the class switched seats to fool Mr. Besser when he became a substitute teacher, and when Nancy's report was worth an A, Mr. Besser mistook her for Charlie due to the seating arrangement plans (since he knew few of the students' names except Jesse and Vinnie, whom he often put in detention). And when Jesse got glasses that he couldn't see with, he was the swing vote between Nancy and Charlie, and, while intending to vote for Nancy, voted for Charlie by mistake because he couldn't see the names clearly.