Linda is their mother's name, not Ladonna, which was the previous answer. In the 80's, their mother was the fictional one hit wonder Landonna, which is probaby making fun of Madonna.
Btw its LINDONNA!
Her name is Linda.
Her full name is Isabella Garcia-Shapiro.
There Father's Name Is Lawrence.
Grandpa Clyde Flynn and Grandma Betty Jo Flynn are Phineas and Ferb's grandparents.
Phineas is Phineas Flynn and Ferb is Ferb Fletcher.
England and the shape of the doofenshmirtz's evil inc. building which sort of looks like Ferbs head.
Flynn
Her full name is Isabella Garcia-Shapiro.
Because they are step-brothers they have different grandmothers. Phineas' is named Betty-Joe Flynn his grandpa is Clyde Flynn. Ferbs' is Winifred Flecter and his grandpa is Reginald Flecter.
Caroline Rhea is the actress that does the voice of Phineas and Ferb's Mother.
Perry the platypus
No it is actually their inventions
dave moon
Phineas is voiced by Vincent Martella. Ferb is voiced by Thomas Sangster.
Ferb is Phineas's stepbrother. Phineas's mom married Ferbs dad.
Her name is Linda Flynn-Fletcher. But if you are referring to her stage name when she was an 80's pop singer, it's Lindana.
Disney Get Connected - 2008 Phineas and Ferbs DS 2-1 was released on: USA: 1 February 2009
There Father's Name Is Lawrence.