User blog comment:Black Spiderman/Push for more Phineas and Ferb!/@comment-1896159-20100622224247

I don't think a Perry the Platypus spin-off would work. For one thing, we already see all of his missions every episode, so I don't see the need for a separate show about him. We don't, though, see as much of the Fireside Girls (with the exception of Isabella) as we do Phineas & Ferb.