Main Characters Isabella Garcia-Shapiro 20 main appearances Phineas Flynn 20 main appearances Ferb Fletcher 20 main appearances Dr. Heinz Doofenshmirtz 3 main appearances Buford Van Stomm 3 main appearances Candace Flynn 2 main appearances Baljeet Tjinder 1 main appearances
Recurring Guest Characters Neil Patrick Harris 2 guest appearances Tom Bergeron 2 guest appearances Regis Philbin 1 guest appearances Jack Black 1 guest appearances Andy Samberg 1 guest appearances Seth Rogen 1 guest appearances Tony Hawk 1 guest appearances Taylor Swift 1 guest appearances Randy Jackson 1 guest appearances Emma Roberts 1 guest appearances Cedric the Entertainer 1 guest appearances David Beckham 1 guest appearances Howie Mandel 1 guest appearances Miss Piggy 1 guest appearances Ty Pennington 1 guest appearances Shaun White 1 guest appearances Larry King 1 guest appearances Jason Segel 1 guest appearances Ben Stiller 1 guest appearances Guy Fieri 1 guest appearances