Walter and Perry are two hyper best friends with high-pitched voices and matching attire. They are always together, usually holding hands, and are adamant about never leaving the other's side. Their relationship is a comedic tool, but treated gracefully by the show. It is also suggested in a DVD commentary track that they may be the only truly happy characters in the series. Later in the series it is revealed that the two frequently engage in delinquent behavior, such as cheating and shoplifting. Small commented that they were often unsure of which person portrayed which character. In the second episode of the fourth season ("Camp"), this dark side of Walter and Perry is further hinted at in a montage during which Coach McGuirk is hallucinating after eating poisonous plants.