Arthur Wiki
Whitney
Gender Male
Family Gussie (older nephew)
Madison (older niece)
Ladonna (younger niece)
Bud (younger nephew)
Rufus Compson (brother or brother-in-law)
Cisely Compson (sister or sister-in-law)
Mable (sister or sister-in-law)
Silas (brother or brother-in-law)
Lena (possibly grandmother)
Cartoon debut "Based on a True Story" (mentioned)

Uncle Whitney is the uncle of Ladonna Compson. She mentions him briefly in the closing of "Based on a True Story." According to Ladonna, Whitney once made a jet pack out of a can of pop.