Ferb Fletcher - Phineas and Ferb

Phineas and Ferb

Main cast, played by Thomas Brodie Sangster

Episode 1x01: Rollercoaster (Aug 17, 2007)
Episode 1x07: Candace Loses Her Head (Feb 5, 2008)
Episode 1x18: It's a Mud, Mud, Mud, Mud World (Feb 24, 2008)
Episode 1x24: The Ballad of Badbeard (Apr 12, 2008)
Episode 1x32: Traffic Cam Caper (Jul 12, 2008)
Episode 1x39: One Good Scare Ought to Do It! (Oct 3, 2008)
Episode 1x45: Phineas and Ferb Get Busted! (Feb 16, 2009)
Episode 2x55: Nerds of a Feather (Aug 16, 2010)
Episode 3x10: Candace Disconnected (Jun 18, 2011)
Episode 3x11: Magic Carpet Ride (Jun 18, 2011)
Episode 3x20: My Fair Goalie (Sep 9, 2011)
Episode 3x21: Bullseye! (Sep 30, 2011)
Episode 3x36: Perry the Actorpus (Mar 3, 2012)
Episode 3x47: Minor Monogram (May 11, 2012)
Episode 3x49: Sleepwalk Surprise (Jun 8, 2012)
Episode 3x50: Sci-Fi Pie Fly (Jun 8, 2012)
Episode 4x10: Backyard Hodge Podge (Apr 19, 2013)
Episode 4x22: Phineas and Ferb Mission Marvel (Aug 16, 2013)
Episode 4x23: Thanks But No Thanks (Sep 13, 2013)
Episode 4x24: Troy Story (Sep 20, 2013)
Episode 4x41: Phineas and Ferb Star Wars (Jul 26, 2014)
Episode S04 Special: O.W.C.A. Files (Nov 9, 2015)

Main cast, played by David Errigo Jr.