List of Phineas and Ferb characters

Main Characters
The following characters have appeared in every episode of the series to this point. (The exception being Isabella and the Temple of Sap in which Major Monogram and Heinz Doofenshmirtz were replaced by Admiral Acronym and Professor Poofenplotz respectively.)

Other Major Characters
The following characters have appeared in several episodes often playing large parts, though sometimes appearing only as cameos.

Recurring Characters
Recurring characters have appeared in more than one episode, but not in enough to qualify as one of the other major characters.

Minor Characters
Minor characters have appeared in only one episode.