Grammar Moses was a villain that appeared in the final issue of the Madballs comic book. She appears using her Board of Education to correct people's grammar. After a battle with the Madballs, she reveals that when she was young, she wanted to be an English teacher. Unfortunately, nobody wanted to hire her, so she took up crime. Rather than turn her in to the police, the Madballs let her become their grammar teacher.
With the Board of Education, Grammar Moses was able to create constructs based on punctuation and letters. Everything she constructed with the Board of Education was powerful and had powers related to the function of the letter or punctuation symbol they were based on. For example, when she enveloped Screamin' Meemie in parenthesis, it was impossible for the other Madballs to see or hear him.