Lawrence Fletcher is voiced by Richard O'Brien.
Caroline Rhea is the actress that does the voice of Phineas and Ferb's Mother.
Phineas is voiced by Vincent Martella. Ferb is voiced by Thomas Sangster.
Ferb is Phineas's stepbrother. Phineas's mom married Ferbs dad.
Richard O'Brien plays Ferb's dad and Phineas and Candace's step-dad and linda's husband
There Father's Name Is Lawrence.
Flynn
Perry the platypus
No it is actually their inventions
dave moon
Disney Get Connected - 2008 Phineas and Ferbs DS 2-1 was released on: USA: 1 February 2009
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.
Grandpa Clyde Flynn and Grandma Betty Jo Flynn are Phineas and Ferb's grandparents.