The dolls are minor characters appearing in several spin-offs.
The dolls are cameo characters, first seen in An Oobi Vacation. In Plane Ol' Pathetic and Uma's First Words, they are given voices and play as characters. In Downstairs! and Umbrella Suite, they are treated as toys belonging to Uma. Several of the same dolls, such as Mulan, can be seen in multiple videos from different series.
The dolls' appearances vary. Most of them have long hair and wear dresses.