I've been wondering; Do you think there are any characters in Homestuck who, regardless of interesting arcs or sad/funny moments, were ultimately irrelevant to the plot as a whole? Especially with the whole retcon, and the whopping 10,000+ pages, I can't help but wonder if there was anyone who ended up having exactly 0 impact on the story.

Most of the Beforan trolls were irrelevant to the plot.