Fireside Girls

The Fireside Girls is an obvious fictionalized version of the Girl Scouts. The troop in Danville is Troop 43261. It appears that it is led, at least in part, by Isabella Garcia-Shapiro. They are very versatile and often use their skills to help Phineas and Ferb carry out their nearly impossible plans.

Members of Troop 43261

 * Isabella Garcia-Shapiro
 * Curly brown-haired girl
 * straight brown-haired girl with sleeveless uniform
 * Gretchen (Girl with glasses and straight light brown hair)
 * Straight dark-haired Asian girl
 * Light skinned, blond girl
 * African-American girl

Fireside Girl Badges

 * Aquatic Safety Badge from "Lawn Gnome Beach Party of Terror"
 * Milking Badge from "The Magnificent Few"
 * Tent Pitching Badge and Marshmallow badge from "Get That Bigfoot Outta My Face!"
 * Tonsillectomy Badge from "I Scream, You Scream"

Participation in Nearly Impossible Plans

 * Flop Starz - Sing in a group called The Ferbettes, a spoof of Alvin and the Chipmunks' The Chipettes
 * The Fast and the Phineas - Phineas's pit crew.
 * It's About Time! - Builds a new time machine to rescue Candace and the boys from prehistoric times.
 * Dude, We're Getting the Band Back Together - Build the stage for Love Händel to play on.
 * The Ballad of Badbeard - Helps look for the Treasure of Captain Badbeard on Spleen Island.
 * One Good Scare Oughta Do It!- Helped with the haunted house.
 * Tree to Get Ready- Audience of tree house fight.
 * Out to Launch - Work in the space port to monitor the boy's launch.
 * Raging Bully - Helped build the ring and give out flyers of the brawl.
 * Lawn Gnome Beach Party of Terror - Helped as lifeguards at the backyard beach.
 * Lights, Candace, Action! - Helped on the set of the movie.
 * Candace Loses Her Head - Helped keep Candace away from seeing her present.

Trivia

 * Isabella and one other girl in Troop 43261 are the only ones that speak during the episode The Fast and the Phineas. Ariel Winter is listed in the credits as the voice of Gretchen. This makes it possible to identify Gretchen as the one with straight light brown hair and wears glasses.
 * The blond girl, though her name was never said or shown, interrupts Isabella in the "Out to launch" episode when Isabella was about to ask Phineas to the dance.
 * In the episode "Raging Bully the curly-brown hair girl and the African-American girl talk about the brawl at the mall and the other girl tells Candace that there are no flyers about the brawl left.
 * Unknown but probably true, the girl with the straight-brown with sleeveless uniform might have said a very short line. She said something like this:"Way to go" in the episode Tree to Get Ready after the the whole group shows the scoring cards of the tree house fight results.

From Phineas and Ferb Wiki, a Wikia wiki.