Allison Stoner
alyson stoner plays isabella and jenny
Vincent Martella plays Phineas and Thomas Sangster plays Ferb.
Allison Stoner plays Isabella's voice in Phineas and Ferb.
This is unknown because none of the series have any of the characters said, thought or wrote down how old they are.
Ferb is a boy of few words. But when he does speak he uses the voice of British actor Thomas Sangster.
Bobby Gaylor plays Buford in Phineas and Ferb love that show!
Why, yes, yes it is. HAHA THATS FROM PHINIAS AND FERB!
Yes, near the end of "Phineas and Ferb: The 2nd Dimension"
yes um tom and jerry, spongebob, patrick, ( from spongebob sqaure pants ) and phinias and ferb
Thomas Sangster plays Ferb.
Vincent Martella plays Phineas and Thomas Sangster plays Ferb.
Maulik Pancholy plays Baljeet on Phineas and Ferb.
Mitchell Musso plays jeremy on Phineas and ferb!
Thomas Sangster
Thomas Sangster
He voiced by Thomas Sangster
Allyson Stoner voices Isabella on Phineas and Ferb.
Mitchel Musso plays Jeremy Johnson on Phineas and Ferb