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 Prickly'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. Menlo is good friends with Randall, though they don't do much together.
Father: Unknown father
Mother: Unknown mother
Friends: Miss Finster, Principal Prickly, Miss Grotke, TJ Detweiler, Vince LaSSao, Ashley Spinelli, Gretchen Grundler, Mikey Blumberg, Gus Griswald, Randall Weems, the Ashleys, Scribe Kid, Jordan and Jerome, King Bob and other Third Street School students
Enemies: Earwin Lawson, Gelman, Conrad Mundy, Greg Skeens, Sue Bob Murphy, Lazy Kid, Chucko Kowalski, Jocko, Buster, Cheay, Koreo and Kurst the Worst
Likes: Working for Ms Lemon, working together with Randall Weems, behaving children and snitching on troublemakers, particularly Lawson.
Dislikes: Misbehaving children, students cussing, being framed by troublemakers, beaten up by bullies especially Lawson and Gelman and being fired by Ms Lemon