Phineas and Ferb Season 1 Characters & Cast — No Spoilers
Every character in Phineas and Ferb season 1 with photos and the actors who play them, including Kelly Hu, Vincent Martella, Thomas Brodie-Sangster — spoiler-free, nothing from later seasons.
- Stacy Hirano (voice) / Additional Voices (voice) — played by Kelly Hu
- Phineas Flynn (voice) — played by Vincent Martella
- Ferb Fletcher (voice) — played by Thomas Brodie-Sangster
- Candace Flynn (voice) — played by Ashley French
- Linda Flynn-Fletcher (voice) — played by Caroline Rhea
- Perry the Platypus (voice) — played by Dee Bradley Baker
- Isabella Garcia-Shapiro (voice) — played by Alyson Stoner
- Buford Van Stomm (voice) — played by Bobby Gaylor
- Heinz Doofenshmirtz (voice) — played by Dan Povenmire
- Francis Monogram (voice) — played by Jeff 'Swampy' Marsh
- Baljeet Tjinder (voice) — played by Maulik Pancholy
- Lawrence Fletcher (voice) — played by Richard O'Brien
- Jeremy Johnson (voice) — played by Mitchel Musso
- Carl Karl (voice) — played by Tyler Alexander Mann
- Additional Voices (voice) / Talking Zebra (voice) (uncredited) / Ben Baxter (voice) — played by Jeff Bennett
- Grandpa Reg (voice) / Grandpa Reginald Fletcher (voice) / Grandpa (voice) — played by Malcolm McDowell
- Additional Voices (voice) — played by Candi Milo
- Additional Voices (voice) / Dr. Gevaarlijk (voice) — played by Jennifer Grey
- Bobby (voice) / Dr. Feelbetter (voice) — played by Carlos Alazraqui
- Grandma / Additional Voices (voice) / Grandma Winifred Fletcher (voice) — played by Jane Carr
All seasons of Phineas and Ferb: full spoiler-free character guide