Isabella Garcia-Shapiro is a Phineas and ferb character, a girl who lives across the way from Phineas and Ferb and is a good friend of theirs. Isabella is a multi-talented member of the Fireside Girls with quite a number of accomplishment patches to her name. She has a not-so-secret crush on Phineas, and likes to pop in once an episode to ask Phineas "What'cha doin'?" and offer to help.