Bumi Stone is the adopted African daughter of Brock and Brittany Stone and adoptive sister to Milan and Woodie Stone on Good Vibes.

Milan introduces Mondo to Bumi in "The Grass is Always Greener" when she gives a tour of the Stone Mansion on her television show prior to her Sweet 16 party although she treats her as just another family belonging. At the party, Bumi gives Milan a gift of a donation to the "Save Darfur" foundation which she rudely dismisses.

She also appears at the Del Toro High School college fair with Milan in "Backstage Babs".