Menlo is Ms. Lemon's filing assistant, a very organized boy who wears a shirt and tie to school and spends most of his time inside Principal Prickley's office, rarely going outside to recess. He boasts that, while not as smart as Gretchen, he is far more organized than all the other kids. Before the current time line he was a rowdy boy, and T.J.'s best friend. Although Menlo is sometimes an antagonist to the main characters, T.J. still attends Menlo's birthday party every year.
He is voiced by Blake Ewing