Girl Scouts

Girl Scouts first appeared in Diary of a Wimpy Kid: Old School

They appeared when a bunch of vans rolled into the parking lot with Girl Scouts who were going to help out in the Town Park clean up. Each of the Girl Scouts organized everyone into separate teams with one Girl Scout to each team at the clean up.

They have also involved in projects like the community garden which the town wanted to build when nobody could get their acts together. Then the Girl Scouts swooped in on a Sunday afternoon.

Not only they helped to organise at the Town Park clean up, they started fundrasing by selling cookies.

But when Greg is returning to playground, one of the Girl Scouts named Brownie who appeared out of nowhere, totally caught him red handed.

So Billy, Frew and Greg run off and Brownie chasing them with a whistle and the entire Girl Scouts troop was in hot pursuit. They had the authority to arrest the wrongdoers and they will earn a badge they need.

On page 197, when Greg and his cabinnates were trying to steal deodorants at girl's cabin and after Greg sneaks inside, he realised that when he looked around, the girl's cabin was full of Girl Scouts. But when Greg decided to call off the mission to get the deodorant, one of his cabinnates fell to the ground named Graham Bertran, accidentally waking up the Girl Scouts who were sleeping. They run away from them.

Appearance
Diary of a Wimpy Kid: Old School (First appearance)