Brownie

Brownie is a girl who appeared in Diary of a Wimpy Kid: Old School.

She is one of the Girl Scouts troops volunteering Greg's team involving raking leaves.

Brownie appeared out of nowhere when she caughts Greg off guard and carrying a whistle when she chased Greg, Frew and Billy with the rest of Girl Scouts troops.

The actual definition of Brownie is a girl scout aged between 6 through 8 and is named based on the color of their uniform.

Trivia

 * Brownie is the kindergarten Rank of Girl Scouts

Appearances
Diary of a Wimpy Kid: Old School (First and only appearance)