<P> Isabella Garcia - Shapiro ( voiced by Alyson Stoner ) is a Jewish Mexican girl . She is one of the brothers ' best friends and has an obvious crush on Phineas Flynn of which he is unaware , though he has shown he cares for her from time to time . She is known for the catchphrase , `` Whatcha doin ' ? '' and is the leader of the Fireside Girls troop 46231 . The troop often helps Phineas and Ferb in their projects . She is named after series creator Dan Povenmire 's oldest daughter . </P>
<P> Isabella Garcia - Shapiro ( voiced by Alyson Stoner ) is a Jewish Mexican girl . She is one of the brothers ' best friends and has an obvious crush on Phineas Flynn of which he is unaware , though he has shown he cares for her from time to time . She is known for the catchphrase , `` Whatcha doin ' ? '' and is the leader of the Fireside Girls troop 46231 . The troop often helps Phineas and Ferb in their projects . She is named after series creator Dan Povenmire 's oldest daughter . </P>
who does alyson stoner play in phineas and ferb
who does alyson stoner play in phineas and ferb
Isabella Garcia - Shapiro
Isabella Garcia - Shapiro