However, after considering comedy's "big duos" including Wallace and Gromit and Jay and Silent Bob, the creators chose to have Ferb speak at least once in most episodes (but in "Summer Belongs To You" he spoke nine times and in "The Lizard Whisperer" gives an entire short speech that lasts about 45 seconds), but to have him remain silent and allow Phineas to speak for him the majority of the time.
Namun, setelah mempertimbangkan "duo besar" komedi termasuk Wallace and Gromit dan Jay and Silent Bob, para pembuat memilih untuk memiliki Ferb berbicara setidaknya sekali dalam sebagian besar episode (tapi dalam "Summer Belongs To You" dia berbicara sembilan kali dan dalam "The Lizard Whisperer" memberikan sebuah pidato singkat yang berlangsung sekitar 45 detik), namun agar dia tetap diam dan membiarkan Phineas berbicara untuknya sebagian besar waktu.