User blog comment:Redgarlic68/‘Phineas And Ferb’ Creators Sign Deals With Disney For Series, Feature, Potential Spinoff/@comment-3489779-20110825194154/@comment-3488468-20110826022439

Aurablase10000@ How can Isabella can be  a popular character,When I see  PandF merchandise they always have Phineas,Ferb,Perry,Doof,and Candace on it.I  never seen  Isabella on any  merchandise.A spin-off of the Fireside girls,Doesn't sound like great spin-off due to the fact the Fireside already had a big role in Phineas and Ferb and their big ideas.