Trixie Tibble

Trixie Tibble is the daughter of Timmy and Tommy Tibble.

One of the main things revealed about Trixie is in "D.W.'s Backpack Mishap," where it is revealed that she makes frequent trips to places around the world.

Arthur

 * 127a. "D.W.'s Blankie"
 * 606b. "D.W.'s Backpack Mishap"