User blog comment:KidLego09/Could Rodney and Scott Be Brothers?/@comment-24152851-20150114050235

This is probably the most likely one so far. Rodney did mention having a lot of brothers. However Scott said he had a sister called Albertha, and Rodney has no sisters. Maybe they're cousins.

Another similarity is they each have aggressive animal who hates them, and tries to kill them. The girls they ask out are quite similar as well, and are known to be violent.