This is a list of characters that are featured in the PBS Kids television show, Arthur. The show is based on the book series by Marc Brown.
Arthur, the title character, is the main character of the series. The main supporting characters are D.W., Buster, Francine, Muffy, Binky, the Brain, Mr. Ratburn, and Arthur's parents. Over the years, the roles of each character have changed as more episodes focused on characters besides Arthur or D.W., most notably Buster, Francine, Muffy, Binky, and the Brain. Minor supporting characters such as Sue Ellen, George, and Fern have also had expanded roles in the series.
Arthur Timothy Read is an aardvark who attends third grade at Lakewood Elementary in Elwood City. He is eight years old and has two younger sisters: D.W. and Kate, as well as a dog named Pal. He plays the piano. He wears a yellow cotton sweater, white dress shirt, blue jeans, and signature round brown glasses.
Dora Winifred Read, usually known as D.W. (voiced by Michael Caloz 1997–1999; Oliver Grainger 1999–2001; Jason Szwimmer 2002–2006; Luciano Rauso 2006, Robert Naylor 2007–2012; Jake Beale 2012–2014; Andrew Dayton 2014–2016; Christian Diestafano 2016-present), is a middle child of the Read family and usually wears a white long-sleeved blouse and a pink sleeveless knee-length dress and has short brown hair. She attends preschool and enjoys watching Mary Moo Cow and listening to Crazy Bus much to Arthur's annoyance. D.W.'s other interests include science & music, and had created a percussion instrument out of common household objects. Many of the series' episodes revolve around tensions between D.W. and her brother. Others are about her preschool friends. She has a counterpart named "W.D.". Both D.W. and W.D. have been voiced by young male actors despite being female characters.
Buster Baxter (voiced by Daniel Brochu) is Arthur's best friend. He is a white rabbit who wears a turquoise long-sleeve shirt and dark jeans. He suffers from asthma. He is also obsessed with aliens. He is interested in comedy, action figures, and is an amateur private investigator. He loves eating, gardens, studies food ingredients, and keeps expired food in his room and school desk. He has no siblings and his parents got a divorce when Buster was younger. He created and celebrates a no-frills holiday called "Baxter Day". His father travels the world from working as a pilot, and as a result they were given a spin-off series, Postcards from Buster. A running gag is Buster being unable to keep a secret, getting his friends into trouble or ridicule.