isabella's last name from phineas and ferb
List of Phineas and Ferb characters Isabella Garcia-Shapiro (voiced by Alyson Stoner) is a Jewish Mexican girl.[24] 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.[25] She is named after series creator Dan Povenmire's oldest daughter.[26]
Olivia Olson Olivia Rose Olson (born May 21, 1992) is an American actress and singer-songwriter, mostly known for her voice roles as Vanessa Doofenshmirtz in Phineas and Ferb and Marceline the Vampire Queen in Adventure Time. She also played the character of Joanna in the 2003 film Love Actually and its 2017 short sequel Red Nose Day Actually.