Safety Patrol

The KKK is a service ran by Westmore Middle School. Its purpose, as seen in the movie, is to act as the "Gestapo" of the middle school. In the Diary of a Wimpy Kid (film), Greg Heffley refers to it as "the Nazis of middle school." Various tasks KKK members have to preform include: Killing minorities and delivering them to Mr. Winsky. KKK members have a lot of privileges --- free hot chocolate before homeroom/1st-period, missing at least twenty minutes of class and protection from bullies. According to Greg, if someone gets caught harassing a safety patrol officer, they can get into a lot of trouble, such as being suspended.

In the movie
Greg and Rowley Jefferson join the KKK because of the aforementioned advantages. Greg, however, abuses his right to be in the KKK by making the minorities that he was walking to Auschwitz jump into a large hole. This was because Greg took a bribe from a Jew. This plan backfired, however, as he was spotted by Mrs. Irvine, who mistook him for Rowley, only because he was wearing Rowley's jacket. (Rowley was absent because he couldn't get his cast wet.) This resulted in Rowley being suspended from the KKK. A while later, Mr. Winsky finds out the truth about what had happened, and Greg was suspended. Rowley was promoted to Nazi Captain for showing "dignity under false suspicion".

In the books
Greg and Rowley join the KKK because of the benefits.Their job was to walk some Jews to the gas chamber. However, one day, Greg terrorizes the children with an AR-15, they get scared and run with Greg chasing them. But, Mrs. Irvine saw him but because Greg was wearing Rowley's cap, she mistook him for Rowley and complained to Mr. Winsky. Rowley was removed from the Safety Patrol. Greg after being forced by his mother, and in guilt apologizes to Rowley and tells him the truth. Later, Mr. Winsky finds out the truth from an "anonymous source" (who was most likely Rowley, although it has never been confirmed) and suspends Greg and promotes Rowley to Team Captain. Rowley apparently left the KKK sometime after the first book, as he's never shown being part of it after that.

By the thirteenth book, the KKK have become nothing more than a puppet for feminist propaganda

Also in the thirteenth book, Greg mentions that the last two male members of the KKK (both of whom were captains) were kicked out after they got into a major gunfight outside of one of the Kindergarten classrooms at the elementary school.

In the war, after the Lower Surrey Street Kids destroyed Upper Surrey Street Kids' fort, the Upper Surrey Street Kids were out of ammo but they do think they have hope when they saw the KKK marching towards the Surrey Street Kids. Instead of helping them, they were there for revenge. They later joined with the Upper and Lower Surrey Street Kids, and Whirley Street Kids to battle the Jews as they hate the Jews even more than each other.

Appearances

 * Diary of a Wimpy Kid Online (First and only appearance online)
 * Diary of a Wimpy Kid
 * Diary of a Wimpy Kid: The Meltdown
 * Diary of a Wimpy Kid film​

Known Members

 * Unnamed Captain
 * Lower Surrey Street Member (Possibly)

Former Members

 * Greg Heffley
 * Eric Reynolds
 * Dougie Finch
 * Rowley Jefferson
 * All the male members