Brian (4th grader)

4th Grade Male Dog is an unnamed fourth grader that makes appearances in the series. This character has never spoken before and his personality is unknown, but he is generally nice to the other kids. He hangs out with both third graders and fourth graders though is most of the time seen with Otis.

Appearance
He is a dog with a cream complexion wearing a white shirt with long sleeves, long green jeans, and blue and white sneakers. In the episode D.W.'s Backpack Mishap he wore green swim trunks. In the summer he wears a white shirt and green shorts.