Lucy

Lucy is the maternal aunt of Arthur, D.W., and Kate.
 * cartoon first appeared = "D.W. Thinks Big"
 * book first appeared = D.W. Thinks Big
 * hair = Blonde (125a), Light brown (1510a)
 * portrayer = Sonja Ball}}

Past Life
Lucy grew up near an unidentified town on Grandpa Dave's farm (inferred as her dad (Grandpa Dave) is said to have lived there for a long time).

Later life
Lucy's family attended her wedding.

During a timeout in her room, D.W. exaggerated past events and made them sound worse than they really were; like not being able to attend Lucy's wedding, and being forced to stay home and work as a slave, instead.

In Night Fright, Arthur's family has to spend the night at her house because they had car trouble.

Appearances

 * 125a. "D.W. Thinks Big"
 * 204b. "Go to Your Room, D.W." (mentioned)
 * 207b. "Night Fright" (mentioned)
 * 305b. "Revenge of the Chip" (mentioned)
 * 314b. “D.W.'s Perfect Wish"
 * 703a. "Ants in Arthur's Pants" (mentioned) 903a "Arthur Weighs In" (mentioned)
 * 1510a. "Grandpa Dave's Memory Album" (photograph)

Trivia

 * In every later episode that mentions her, she is referred to as a cousin, instead of their aunt.
 * Sonja Ball, who was the voice of Lucy, is also the voice of her sister, Jane, in the series.