Season 4

Season 4 of Arthur premiered on September 6, 1999 on PBS. From this point onward, only 10 episodes were produced per season.

Trivia

 * This is the first season to consist of only 10 episodes.
 * This is the first season to feature Oliver Grainger as the voice of D.W., and the final season to feature Luke Reid as the voice of The Brain. His voice was noticeably deeper for this season
 * This is the final season to feature the work of head writers Joe Fallon and Ken Scarborough.