The Snellas are a family that lives in the Heffleys' neighborhood, and they have a lot of children, all of whom are male and have names beginning with the letter S. Five of the children's names are revealed, and they are (from oldest to youngest): Shawn, Shane, Sam, Scott, and Seth. In The Last Straw, it is revealed that each Snella child has a half birthday party in which the adults perform funny stunts, in which no baby has laughed once, according to Greg.
Mr. Snella then sends the videos to "America's Funniest Families", a spoof and parody of America's Funniest Home Videos, and has never won anything (though due to Greg's embarrassing moment at the end of The Last Straw, they may have finally won).
It was explained in The Ugly Truth that they moved away at some point because at one of their kids' half-birthday parties, Greg was going to eat some deviled eggs at the party. But because of how revolting they were, Greg tossed them into one of the ' plastic plants. Over time, the smell started to really annoy the Snella's, and since they could not trace it, they moved out. When they were moving out, Greg admitted that he felt guilty after seeing them take the plastic plant, meaning they will probably move out again once they smell the eggs.In Cabin Fever,Mr Alexander moves into their house.