Kate is mostly a background character. She is Arthur and D.W.'s youngest sister. Not much is known about her until episodes where she and Pal try talking to each other. Eventually, this ability wore off.
Appearances
Arthur
Main cast, played by Tracy Braunstein
- Episode 6x05: Prunella's Special Edition (Oct 8, 2001)
- Episode 6x06: The Secret Life of Dogs and Babies (Oct 8, 2001)
- Episode 6x11: Citizen Frensky (Oct 29, 2001)
- Episode 6x12: D.W.'s Backpack Mishap (Oct 29, 2001)
- Episode 6x13: The Boy with His Head in the Clouds (Nov 5, 2001)
- Episode 6x14: More! (Nov 5, 2001)
- Episode 6x17: The Good Sport (Nov 19, 2001)
- Episode 6x18: Crushed (Nov 19, 2001)
- Episode 7x01: Cast Away (Oct 8, 2002)
- Episode 7x02: The Great Sock Mystery (Oct 8, 2002)
- Episode 8x05: Arthur's Snow Biz (Sep 17, 2003)
- Episode 8x06: Bugged (Sep 17, 2003)
- Episode 8x16: Flea to Be You and Me (Dec 25, 2003)
- Episode 8x17: Kiss and Tell (Dec 25, 2003)
- Episode 10x10: The Curse of the Grebes (May 22, 2006)
- Episode 10x11: Arthur Changes Gears (May 22, 2006)
- Episode 11x11: The Making of Arthur (Sep 3, 2007)
- Episode 11x12: Dancing Fools (Sep 3, 2007)
- Episode 11x17: D.W. on Ice (Sep 6, 2007)
- Episode 11x18: Spoiled Rotten! (Sep 6, 2007)
- Episode 11x19: Big Brother Binky (Sep 7, 2007)
- Episode 12x15: The Blackout (Apr 22, 2009)
- Episode 12x16: Mei Lin Takes a Stand (Apr 22, 2009)
- Episode 14x07: Falafelosophy (Oct 25, 2010)
- Episode 14x08: The Great Lint Rush (Oct 25, 2010)
- Episode 14x13: Around the World in 11 Minutes (Apr 25, 2011)
- Episode 14x14: Muffy and the Big Bad Blog (Apr 25, 2011)
- Episode 15x01: Fifteen (Oct 10, 2011)
- Episode 16x06: Get Smart (Oct 18, 2012)
- Episode 16x07: Baby Steps (Oct 18, 2012)
- Episode 17x01: Show Off (Nov 11, 2013)
- Episode 17x02: Dog's Best Friend (Nov 11, 2013)
- Episode 17x13: Pets and Pests (Apr 22, 2014)
- Episode 17x14: Go Fly a Kite (Apr 22, 2014)
- Episode 19x07: Carried Away (May 26, 2016)
- Episode 19x08: Dueling Detectives (May 26, 2016)
- Episode 21x12: Invasion of the Soccer Fans (Feb 15, 2018)
- Episode 21x13: Pal and the Big Itch (Feb 15, 2018)