"Hi, Phineas. Whatcha doin'?"
"Calm down, girls. Have you forgotten who we are? We're Fireside Girls Troop 46321 and we never give up!"
Isabella Garcia-Shapiro is the neighbor and best friend of Phineas and Ferb. Isabella has a crush on Phineas; however, she doesn't tell him. She's the leader of Fireside Girls Troop 46231, and often volunteers to help in Big Ideas, usually with her troop involved.
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